Hey guys, im looking to buy some preformance parts for my cobalt even tho its a lease :(. im looking to go GMPP just because with those i can trust my warrenty wont get voided.

So im looking to buy: Air intake
Preformance Exhaust
Exhaust Manifold

How much horsepower should these bump me up to? and what ones will give me the most bang for my buck?

I dont think GM makes a cold air intake for the 2.0L. But with the Manifold and exhaust, Id say between 15 and 20hp? Not to sure though.

Its for my 2.4 anyways, thanks alot for the quick response ++Rep

Thx. I think the GM Intake works for the 2.2 and 2.4s. Id say it would give you between 5-8 hp though. Get em all and go get dynod!!

Thx. I think the GM Intake works for the 2.2 and 2.4s. Id say it would give you between 5-8 hp though. Get em all and go get dynod!!

I have alot of GM parts on my car and am very satisfied. Love the sound of the exhaust, but have not had it dyno just yet. I did a stock dyno and put down 208hp at the wheels, so once I find time to dyno I should be able to tell how much hp I gained from them at least.

I'd say with those parts on a 2.4 prolly more in the 10-15hp range... get a good tune and then it'll prolly be more like 20-25 hp! Get some 2.0 SS/SC injectors for even more powa!

2.4 or 2.0 i have 2.4 i got the gmpp intake which i wouldnt recomend. and i have the gmpp performance. which is great for about 10 or so hp. the intake is about 5 hp. not to bad so id say yes go with it.

ryan.

2 things:

1) if it's a lease, why mod it? are you planning on keeping it? that's alot of money to spend for something you'll be giving back soon.

2) since you mentioned warranty, when you lease a car you're not allowed to do any modifications, doesn't matter if it's gm or not.

But if he mods the car now, and removes the performance parts when it comes time to return the car (if he decides on that) shouldnt he be okay?

i have those same modds and it felt like i got around 18-19 hp to the wheels, but i have a 2.4 , it just depends on the engine, and the 2.0 doesnt come with gmpp intake

2.4 or 2.0 i have 2.4 i got the gmpp intake which i wouldnt recomend. and i have the gmpp performance. which is great for about 10 or so hp. the intake is about 5 hp. not to bad so id say yes go with it.

ryan.

Why wouldn't you reccommend the GMPP Intake?

2 things:

1) if it's a lease, why mod it? are you planning on keeping it? that's alot of money to spend for something you'll be giving back soon.

2) since you mentioned warranty, when you lease a car you're not allowed to do any modifications, doesn't matter if it's gm or not.

Well i just leased it not even a month ago..so i got 3 years and 11 months to go, i dont plan to buy it out if GM releases a new Cobalt SS/SC around that time..but if they dont i mite end up buying it, also the parts i want arnt a huge amount of money...1000 tops? and most of it i can take off and reapply if i decide to trade it in

and with my lease i talked to my dealer and made it very clear that i want to mod it and he said yes you can do anything you want as long as u dont fuck up the car were we cant fix it lol, hes a good friend of mine so im not worried about that.

Thanks for the respones guys, i think im going to buy the GMPP Exhaust /w manifold and get a K&N typhoon air intake if my dealer says thats ok, if not il go GMPP

Also are those 2.0 injectors called the stage 1 kit on GMPP's site? i was always wondering what people ment by 2.0 injectors can somone explan that to me

Well i just leased it not even a month ago..so i got 3 years and 11 months to go, i dont plan to buy it out if GM releases a new Cobalt SS/SC around that time..but if they dont i mite end up buying it, also the parts i want arnt a huge amount of money...1000 tops? and most of it i can take off and reapply if i decide to trade it in

and with my lease i talked to my dealer and made it very clear that i want to mod it and he said yes you can do anything you want as long as u dont fuck up the car were we cant fix it lol, hes a good friend of mine so im not worried about that.

Thanks for the respones guys, i think im going to buy the GMPP Exhaust /w manifold and get a K&N typhoon air intake if my dealer says thats ok, if not il go GMPP

Also are those 2.0 injectors called the stage 1 kit on GMPP's site? i was always wondering what people ment by 2.0 injectors can somone explan that to me

the stage 1 kit is for the supercharged modles only, and superchargers only come on 2.0 liter motors, not 2.2 or 2.4, now you could fit those injectors on 2.4 for more power but you will need a tune and will also void your warrenty, just stick to the cat-back, manifold and intake like i did.

and yes the K&N typhoon air intake will void your warrenty, put it this way, if you didnt buy it from the dealership , its gonna void your warrenty, engine wise. sucks i know

Well i just leased it not even a month ago..so i got 3 years and 11 months to go, i dont plan to buy it out if GM releases a new Cobalt SS/SC around that time..but if they dont i mite end up buying it, also the parts i want arnt a huge amount of money...1000 tops? and most of it i can take off and reapply if i decide to trade it in

and with my lease i talked to my dealer and made it very clear that i want to mod it and he said yes you can do anything you want as long as u dont fuck up the car were we cant fix it lol, hes a good friend of mine so im not worried about that.

Thanks for the respones guys, i think im going to buy the GMPP Exhaust /w manifold and get a K&N typhoon air intake if my dealer says thats ok, if not il go GMPP

Also are those 2.0 injectors called the stage 1 kit on GMPP's site? i was always wondering what people ment by 2.0 injectors can somone explan that to me

K&N Intake will not VOID your warranty no matter what anybody says. K&N will even back that statement 150%. What it will do is you will no longer have a warranty on your intake. If there is a problem, the dealer will have to prove that it is a direct result of your Intake which will be incredibly difficult if not impossible. If the guy is a buddy of yours I don't see him doing that either. If you want the K&N install it yourself (it isn't that hard) and when you need to bring it in... replace it with the stock airbox.

So should i got K&N or GMPP Intake??

I believe the consensus is Intake is Intake so it doesn't really matter. If you want it warrantied get the GMPP. If that doesn't matter to you, get whichever you think is nicer looking. the GMPP can be made to be functional (by cutting the hood with an offset scoop...not reccommended for lease - or - by getting an aftermarket hood which directs the air from a scoop into the intake). Personally I plan on getting the GMPP since it is a closed box and therefore will not be sucking as much hot air from inside the engine compartment and do plan on making it functional.

just get the gmpp, you'll keep your warrenty
its the same price as others
easy to install
replacement filter is just 30 bucks
all and all you dont have to worrie about changin it out to take it for warrrenty work.

I have the GMPP manifold and exhaust system, but i went with the injen intake because i wanted to go cold air instead of short ram....

talked to my dealer today and he said 500 for the mainifold installed and about 600 for the preformance exhaust installed, i think once i get some Overtime hours im going to get the manifold first followed by exhaust then intake later. thanks alot for the help guys

i wouldnt go too crazy with mods, those stock injectors cant handle too much, they pretty much come from the factory at 100% duty.U will be ok with just an intake but exaust and header might be pushing it im not intirely sure.

talked to my dealer today and he said 500 for the mainifold installed and about 600 for the preformance exhaust installed, i think once i get some Overtime hours im going to get the manifold first followed by exhaust then intake later. thanks alot for the help guys

woah woah woah, i said $170 install for manifold and cat-back, you got ripped off

talked to my dealer today and he said 500 for the mainifold installed and about 600 for the preformance exhaust installed, i think once i get some Overtime hours im going to get the manifold first followed by exhaust then intake later. thanks alot for the help guys

dude, you should get both installed for like 650. install it yourself and you will save even more! its not that hard... just some jack stands and a couple tools.

p.s. i read somewhere on here that gm is releasing performance injectors and tune for the 2.4......

woah woah woah, i said $170 install for manifold and cat-back, you got ripped off

the price i said inclued the manifold and installation

oh thats all said and done price....thats not too bad, i wish i woulda put the cat-back on myself because its all bolt on, no welding required

Well i just leased it not even a month ago..so i got 3 years and 11 months to go, i dont plan to buy it out if GM releases a new Cobalt SS/SC around that time..but if they dont i mite end up buying it, also the parts i want arnt a huge amount of money...1000 tops? and most of it i can take off and reapply if i decide to trade it in

and with my lease i talked to my dealer and made it very clear that i want to mod it and he said yes you can do anything you want as long as u dont fuck up the car were we cant fix it lol, hes a good friend of mine so im not worried about that.

Thanks for the respones guys, i think im going to buy the GMPP Exhaust /w manifold and get a K&N typhoon air intake if my dealer says thats ok, if not il go GMPP

Also are those 2.0 injectors called the stage 1 kit on GMPP's site? i was always wondering what people ment by 2.0 injectors can somone explan that to me

You do know they canceled the SS/SC, right?

Hey guys, im looking to buy some preformance parts for my cobalt even tho its a lease :(. im looking to go GMPP just because with those i can trust my warrenty wont get voided.

So im looking to buy: Air intake
Preformance Exhaust
Exhaust Manifold

How much horsepower should these bump me up to? and what ones will give me the most bang for my buck?

dont buy the gmpp manifold it sucks. buy the ca header. you can buy the gmpp exhaust i love mine but the exhaust should bump you 10whp. and header maybe 5whp

ryan.

dont buy the gmpp manifold it sucks. buy the ca header. you can buy the gmpp exhaust i love mine but the exhaust should bump you 10whp. and header maybe 5whp

ryan.

yea i wasnt to pleased with my manifold, im starting to think it was a waste of $331, but its gona suck for yall when you need warrenty work done.

yea i wasnt to pleased with my manifold, im starting to think it was a waste of $331, but its gona suck for yall when you need warrenty work done.

It was man...

Header designs flow much better and maintain a better scavenging effect than a manifold design.

p.s. i read somewhere on here that gm is releasing performance injectors and tune for the 2.4......


Where did you read that?

You do know they canceled the SS/SC, right?

Yeah i know they cancled it for next year, but come on the ss/sc is like the only cheap fast sports car chevy has, they will bring it back with better emissions or possibly a turbo in a few years

im not 100% sure what the difference between manifold and CA headers are, i know Manifold goes into the catalayst and are CA headers from the cylinders?? if somone could explan that, that would be awesome

Sorry for all the questions, im only 17, dont know all the mechanics behind automobiles yet, and again thanks alot for the help guys

Yeah i know they cancled it for next year, but come on the ss/sc is like the only cheap fast sports car chevy has, they will bring it back with better emissions or possibly a turbo in a few years

im not 100% sure what the difference between manifold and CA headers are, i know Manifold goes into the catalayst and are CA headers from the cylinders?? if somone could explan that, that would be awesome

Sorry for all the questions, im only 17, dont know all the mechanics behind automobiles yet, and again thanks alot for the help guys

If they bring it back is questionable but if they do, it won't be supercharged.

Headers would flow exhaust better.

It's alright and you're welcome.

Sorry gonna ask a noob question.... but whats the difference between a manifold and a header... i thought the names were interchangeable. What's that scavenging effect you were talking about?

Thanks

yea my catback only cost 80.00 to installed

Sorry gonna ask a noob question.... but whats the difference between a manifold and a header... i thought the names were interchangeable. What's that scavenging effect you were talking about?

Thanks

I'll show you a simple picture that will show you the difference...

Stock Exhaust Manifold (some car)
http://premium1.uploadit.org/telegon80/Header/stock-header.jpg

Header
http://img.alibaba.com/photo/50532041/Exhaust_Header.jpg

Basically, the primaries are much longer and independant before it reaches the collector.

To give a decent explaination of scavenging effect...
http://www.enjoythedrive.com/content/?id=8178

I would also suggest reading this as well...
http://www.ecotecforum.com/forums/showthread.php?t=2948

wow dude. great answer. thanks +rep for great info

wow dude. great answer. thanks +rep for great info

It's no problem. Anytime.

I have the GMPP manifold and exhaust system, but i went with the injen intake because i wanted to go cold air instead of short ram....

whats the big difference between short ram, and cold air? which is better?

a short ram intake which is what the GMPP intake is, sucks up more heat because it is located in the engine bay so the intake sucks up the hot air coming off the motor... and the cold air is located towards the bottom end of the car so i sucks up colder air which is better performance wise.... thats why its considered a "cold air intake"....

a short ram intake which is what the GMPP intake is, sucks up more heat because it is located in the engine bay so the intake sucks up the hot air coming off the motor... and the cold air is located towards the bottom end of the car so i sucks up colder air which is better performance wise.... thats why its considered a "cold air intake"....

Actually the GM intake sucks air in a couple of inches away from the radiator. I don't think you can get much "colder" air than that.

Actually the GM intake sucks air in a couple of inches away from the radiator. I don't think you can get much "colder" air than that.

actually the gm intake doesn't suck anything up as it is sealed to the hood of the car lol jk.... kinda

Actually the GM intake sucks air in a couple of inches away from the radiator. I don't think you can get much "colder" air than that.

your kidding right??? you think the GM intake gets cold air from the radiator???
The GM intake is pointed away from the front of the car where the radiator is.... and away from cold air... plus the Injen CAI and the GM intake are mounted in the same area the only difference is the location of the filter .... the Injen air filter is located in the bumper behind the right headlight....

your kidding right??? you think the GM intake gets cold air from the radiator???
The GM intake is pointed away from the front of the car where the radiator is.... and away from cold air... plus the Injen CAI and the GM intake are mounted in the same area the only difference is the location of the filter .... the Injen air filter is located in the bumper behind the right headlight....

The stock airbox has a silencer which pipes right behind head light so It is pulling air from behind the headlight and the grill. Us guys with this silencer like to remove it and we get a large air compartment under the headlight that get filled with cold air from the fog light housing. I do not know for sure but doesn't the GMPP Intake simply replace the stock airbox so it still pulls air from the stock location? This would mean it would still pull the cold air from that area and it presses up against the hood to try and make a seal.

That is why I want the GMPP because I do not want to pull so much air from the engine. I would rather pull from the stock location and in turn get a functional hood.

I have the GMPP manifold and exhaust system, but i went with the injen intake because i wanted to go cold air instead of short ram....

Ummm you do know that the GMPP intake is a Cold air intake right?

It is not a short ram intake.

The stock airbox has a silencer which pipes right behind head light so It is pulling air from behind the headlight and the grill. Us guys with this silencer like to remove it and we get a large air compartment under the headlight that get filled with cold air from the fog light housing. I do not know for sure but doesn't the GMPP Intake simply replace the stock airbox so it still pulls air from the stock location? This would mean it would still pull the cold air from that area and it presses up against the hood to try and make a seal.

That is why I want the GMPP because I do not want to pull so much air from the engine. I would rather pull from the stock location and in turn get a functional hood.

The 2007 SS 2.4L Stock airbox also pulls air from below and behind the right headlight! Its COLD AIR but not rammed, scooped, or presurized. So IS THERE ANY HP GAIN to be had for a 2007 2.4 using Injen or one of the other CAI systems?

The 2007 SS 2.4L Stock airbox also pulls air from below and behind the right headlight! Its COLD AIR but not rammed, scooped, or presurized. So IS THERE ANY HP GAIN to be had for a 2007 2.4 using Injen or one of the other CAI systems?

yes there will be gain because the intake will be less restrictive than the stock. the air will flow better and easier. there is fresh air in the area so it is not like you will ONLY be sucking up engine compartment air.

your kidding right??? you think the GM intake gets cold air from the radiator???
The GM intake is pointed away from the front of the car where the radiator is.... and away from cold air... plus the Injen CAI and the GM intake are mounted in the same area the only difference is the location of the filter .... the Injen air filter is located in the bumper behind the right headlight....

What if you had a ram air hood?

What if you had a ram air hood?

the gm intake would be more benificial with a ram air hood ... there is a member here that gianed more power with a gm intake after installing a ram air ....

and the gm intake is a fake ass cold air.... just because gm says its a cold air doesnt meen its a cold air it looks exactly like a short ram to me... and if you look up the K&N intake for the 2.2l cobalt it is listed as a "short ram" and it is in the exact same place as the GM intake .... and i dont know what makes the GM intake a cold air and the K&N a short ram?

The 2007 SS 2.4L Stock airbox also pulls air from below and behind the right headlight! Its COLD AIR but not rammed, scooped, or presurized. So IS THERE ANY HP GAIN to be had for a 2007 2.4 using Injen or one of the other CAI systems?

the stock air filter system is way too restricted... i dont know if any of you guys have actually pulled yours off and looked at it but it is way more restrictive than any CAI or even the GM intake....a CAI or even the GM intake is more benificial because they pull more air overall compared to the stock system... and plus i ran almost a half second better in the 1/8 mile with my injen CAI compared to the stock system.... i went from a 10.5 stock to a 10.1 with the injen....

The stock airbox has a silencer which pipes right behind head light so It is pulling air from behind the headlight and the grill. Us guys with this silencer like to remove it and we get a large air compartment under the headlight that get filled with cold air from the fog light housing. I do not know for sure but doesn't the GMPP Intake simply replace the stock airbox so it still pulls air from the stock location? This would mean it would still pull the cold air from that area and it presses up against the hood to try and make a seal.

That is why I want the GMPP because I do not want to pull so much air from the engine. I would rather pull from the stock location and in turn get a functional hood.

Wow, someone else who has actually looked under their hood.:lol: :twothumbs

I took off my silencer last week finally, and will replace it with a pipe to either the radiator, or as close the grill as I can get it.

the gm intake would be more benificial with a ram air hood ... there is a member here that gianed more power with a gm intake after installing a ram air ....

LewiSS, he dyno'd with the scoop open and sealed. 9whp and 7wtorque gain.

http://www.cobaltss.net/forums/showthread.php?t=47695&page=2

and the gm intake is a fake ass cold air.... just because gm says its a cold air doesnt meen its a cold air it looks exactly like a short ram to me... and if you look up the K&N intake for the 2.2l cobalt it is listed as a "short ram" and it is in the exact same place as the GM intake .... and i dont know what makes the GM intake a cold air and the K&N a short ram?

The GMPP would be a short ram if there was no box sealing it away from the engine compartment. The bottom of the box has a tube attached that goes straight down and attaches to the silencer. That then curves down and toward the headlight assembly and is precisely 4 1/2 inches away from the radiator. It pulls in air through the grill and outside the car, thus making it a cold air intake.

The K&N only has a heat shield, it isn't completely sealed, and doesn't draw air in from the front of the car, which makes it only a short ram.

So before you start typing gibberish, look at your car as well as others. By what you typed, I would assume you didn't even install your own intake.

PS. I hope you are not still running 10 seconds in the 1/8th.;)

^^^ Let me know how that tube works out for you. I debated on doing it but I get plenty of cold air rushing into that compartment Since I have foglights.

Definitely love the sound tho. SO much nicer

" The bottom of the (air filter) box has a tube attached that goes straight down and attaches to the silencer. That then curves down and toward the headlight assembly and is precisely 4 1/2 inches away from the radiator. It pulls in air through the grill and outside the car, thus making it a cold air intake. "

The above is what I see in my 2007 SS 2.4L NA stock engine compartment. So it seems one CAI option (for me) is to replace the stock air filter element with a less restrictive oiled foam element which fits the air box (7 HP gain) and remove the silencer too (probably 1-3 HP due to less restriction / turbulance).

Comments?

CSM... yea thats our airbox mod. I haven't put a drop in filter yet but I did remove the silencer. It is much less restrictive and someone dashhawked it and showed cooler temperatures. The sound is effin wonderful, it actually has a growl.

I don't know about 7HP with a drop in filter but I am sure by doing both you will like the difference.

go to the 2.2 section and you will see the how to on removing this thing... its a pain in the ass. if you want you could PM me too.

I took off my silencer last week finally, and will replace it with a pipe to either the radiator, or as close the grill as I can get it.

Have you thought about getting something that starts wide and then constricts in? There are a few hoods that actually do this when they shift the air. Might be nice to have like an opening the size of the whole fog assembly that ends in a 3" pop to hook into the airbox?

It is far from a pain in teh ass it can be done simply by removing the front passanger side wheel and tire and removing teh splashguard. you then ahve complete unrestricted access to teh silencer to remove it. You dont ahve to do all teh remove the headlight bullshit like the post in teh 2.2 forums said.

^^^ yes i know, but that is a pain in the ass too. LOL.

well worth it either way tho

Wow, someone else who has actually looked under their hood.:lol: :twothumbs

I took off my silencer last week finally, and will replace it with a pipe to either the radiator, or as close the grill as I can get it.



LewiSS, he dyno'd with the scoop open and sealed. 9whp and 7wtorque gain.

http://www.cobaltss.net/forums/showthread.php?t=47695&page=2



The GMPP would be a short ram if there was no box sealing it away from the engine compartment. The bottom of the box has a tube attached that goes straight down and attaches to the silencer. That then curves down and toward the headlight assembly and is precisely 4 1/2 inches away from the radiator. It pulls in air through the grill and outside the car, thus making it a cold air intake.

The K&N only has a heat shield, it isn't completely sealed, and doesn't draw air in from the front of the car, which makes it only a short ram.

So before you start typing gibberish, look at your car as well as others. By what you typed, I would assume you didn't even install your own intake.

PS. I hope you are not still running 10 seconds in the 1/8th.;)

Actually i did install my own intake, exhaust manifold and exhaust system... and when i took the stock air intake off all I SAW was a bunch of plastic bullshit .... sorry i didnt pay as much attention to it as you did .... and i was wondering what your times at the track are if you dont mind me asking??

Well I have a LS with GMPP Intake, GMPP Manifold custom ported and polished, Custom 2.75inch high flow exhaust and on drag radials I put down a 15.100 @ 91mph. As far as I know theres only like 1 or 2 other LS's that have ran that kind of time NA. I am perfectly satisfied with the GMPP parts even if I did modify the manfild and choose custom exhaust over the ricey GMPP or Corsa shit.

The one change I would recommend on the GMPP intake is buy the heat reflective wrap to put around the piping.

Have you thought about getting something that starts wide and then constricts in? There are a few hoods that actually do this when they shift the air. Might be nice to have like an opening the size of the whole fog assembly that ends in a 3" pop to hook into the airbox?

Ahh, the venturi effect. Definately not a bad idea. Now I just have to find the plastic tubing for it. I guess I should start taking measurements.:cssNET:


Actually i did install my own intake, exhaust manifold and exhaust system... and when i took the stock air intake off all I SAW was a bunch of plastic bullshit .... sorry i didnt pay as much attention to it as you did .... and i was wondering what your times at the track are if you dont mind me asking??

Sorry for assuming. I have run a fastest of 9.7 in the 1/8th at 71mph, but consistantly ran 9.9-10.2. Although, the best I have done in the quarter is only a 16.2 so far. That was with tons of wheel spin, my 60 foots suck major @$$, 2.5-2.6. And I would guess I got a ton of heat soak, especially since both times I went to the track, the temperatures were 105+ degrees. I'll get more practice at launching at the track, cause I am sure I need a driver mod. I expect to be well into the 15's come fall when the temperatures finally get down under the 90's. Technically, with perfect traction I should be around a 15.2-15.3.

Also remember I am just a 2.2L.:cool:

Well I have a LS with GMPP Intake, GMPP Manifold custom ported and polished, Custom 2.75inch high flow exhaust and on drag radials I put down a 15.100 @ 91mph. As far as I know theres only like 1 or 2 other LS's that have ran that kind of time NA. I am perfectly satisfied with the GMPP parts even if I did modify the manfild and choose custom exhaust over the ricey GMPP or Corsa shit.

The one change I would recommend on the GMPP intake is buy the heat reflective wrap to put around the piping.

Very nice time.

I agree on that heat wrap, because that intake pipe gets really friggin hot!!!

PS: Eric304, you might consider shrinking your sig, cause for one it is just massive, and two, the mods will say something to you about it sooner or later.

The 2007 SS 2.4L Stock airbox also pulls air from below and behind the right headlight! Its COLD AIR but not rammed, scooped, or presurized. So IS THERE ANY HP GAIN to be had for a 2007 2.4 using Injen or one of the other CAI systems?

This morning I took my 2007 Cobalt SS 2.4L in to a local Chevy dealership to have the air silencer removed..... after looking at it (the silencer), I had them put it back on!!!

As a former trained mechanic (1966-1973) in air induction systems, including turbos and superchargers, I see the 2007 2.4L NA stock air induction system as a reasonably engineered Cold Air Induction system. It pulls air from the cavity formed by the right front wheel splash guard, bumper cover, and engine compartment panels. The "silencer" has a "bell" opening approximately 3 inches in diameter and a nice wide bend radius to the air filter box inlet. There is some secondary additional "plumbing", a set of baffels, to help prevent filter media wetting and to prevent small rocks from being sucked into the filter media but the primary tube is unrestricted.

Just removing the silencer would allow some engine compartment air to be pulled into the air filter box inlet. It would also allow moisture from rain or wet roads to be pulled into the filter media. Not wanting either of these two situations were the reasons I had the silencer put back on!

It appears to me that the only thing I would do to the stock air induction system, is to pipe air from the behind the grill (scoop / pickup in front of the radiator) to the silencer inlet.

There may very well be commercial CAI solutions for the 2007 2.4L NA Ecotec 5 engine but to date I have not found one.... all thus far are based on 2005 2.2L NA engines; I don't believe one can just extrapolate the HP gains on a stock 2.2L to the 2007 2.4L NA, but I'm ready to learn from anyone with experience otherwise on a 2007 SS 2.4L NA!:cool:

Ahh, the venturi effect. Definately not a bad idea. Now I just have to find the plastic tubing for it. I guess I should start taking measurements.:cssNET:

let me know what you find.. i been crazy busy at work so i haven't had time to look into this...

This morning I took my 2007 Cobalt SS 2.4L in to a local Chevy dealership to have the air silencer removed..... after looking at it (the silencer), I had them put it back on!!!

As a former trained mechanic (1966-1973) in air induction systems, including turbos and superchargers, I see the 2007 2.4L NA stock air induction system as a reasonably engineered Cold Air Induction system. It pulls air from the cavity formed by the right front wheel splash guard, bumper cover, and engine compartment panels. The "silencer" has a "bell" opening approximately 3 inches in diameter and a nice wide bend radius to the air filter box inlet. There is some secondary additional "plumbing", a set of baffels, to help prevent filter media wetting and to prevent small rocks from being sucked into the filter media but the primary tube is unrestricted.

Just removing the silencer would allow some engine compartment air to be pulled into the air filter box inlet. It would also allow moisture from rain or wet roads to be pulled into the filter media. Not wanting either of these two situations were the reasons I had the silencer put back on!

It appears to me that the only thing I would do to the stock air induction system, is to pipe air from the behind the grill (scoop / pickup in front of the radiator) to the silencer inlet.

There may very well be commercial CAI solutions for the 2007 2.4L NA Ecotec 5 engine but to date I have not found one.... all thus far are based on 2005 2.2L NA engines; I don't believe one can just extrapolate the HP gains on a stock 2.2L to the 2007 2.4L NA, but I'm ready to learn from anyone with experience otherwise on a 2007 SS 2.4L NA!:cool:

I did some checking on the K&N Tornado SAI claimed 16 HP gain for 2006 and 2007 2.4L... the Dyno Chart http://www.kandn.com/dynocharts/69-4517.pdf is for the 2006 not the 2007 so us 2007 owners are still trying to figure what the HP advantage will be.

Who has 2007 LE5 Stock and CAI/SAI Filter Dyno runs?

I did some checking on the K&N Tornado SAI claimed 16 HP gain for 2006 and 2007 2.4L... the Dyno Chart http://www.kandn.com/dynocharts/69-4517.pdf is for the 2006 not the 2007 so us 2007 owners are still trying to figure what the HP advantage will be.

Who has 2007 LE5 Stock and CAI/SAI Filter Dyno runs?

It's the same engine, same transmission, same tuning, same engine bay design, same car. The only difference between 2006 and 2007 is there's alot more 7's instead of 6's printed on the stickers.

GM rated the 2006's at 171hp and the 2007's at 173 hp. This wasn't because the engine changed, they used a different(more accurate) dyno to record the crank HP.

As for K&N claiming 16 HP from an intake. That's a little on the optimistic side for someone putting on a SRI. In reality under street conditions it would probably equate more to 6-12hp

well im running gmpp intake sport exhaust CA header and CA 2.5 highflow catted dp.

in total that gives me about 18whp to 22whp.

with just the intake and exhaust and header you should be gettin about.

10+3-5+3-5= you should get around 15-18whp if you have a good tune

now with injector swap and all ive listed its about 30whp added from the stock 143whp.

ryan. i doubt k+n intake is anymore then 12hp even if it was RAM AIR. i would say only 6hp at best not ram air.

well im running gmpp intake sport exhaust CA header and CA 2.5 highflow catted dp.

in total that gives me about 18whp to 22whp.

with just the intake and exhaust and header you should be gettin about.

10+3-5+3-5= you should get around 15-18whp if you have a good tune

now with injector swap and all ive listed its about 30whp added from the stock 143whp.

ryan. i doubt k+n intake is anymore then 12hp even if it was RAM AIR. i would say only 6hp at best not ram air.

you can not just add HP figures for dif parts it doesnt work that way :twothumbs

you can not just add HP figures for dif parts it doesnt work that way :twothumbs

that kid was a tool lol thats why he was banned

that kid was a tool lol thats why he was banned

hahaha oh my bad lmao... but word:twothumbs:guns::spam:

I just wanted to say something that's has been bothering me for some time now about retaining the factory warranty. People.......if you put non GMPP parts on, it's not like they can deny warranty on the whole car......it just doesn't work that way, and it's illegal for them to do it anyway. If you put an intake on the car and it screws up or breaks (the intake) obviously they're not going to warranty an aftermarket part......same goes for exhaust. Now if that part, without a shadow of a doubt, caused something else to fail.....then that part will not be under warranty. A common one is lowering springs........they cause the stock shocks/struts to wear out prematurely because it makes them travel further than they were designed. In that case, the stock shocks/struts will not be covered under warranty. It's just common sense.

I just wanted to say something that's has been bothering me for some time now about retaining the factory warranty. People.......if you put non GMPP parts on, it's not like they can deny warranty on the whole car......it just doesn't work that way, and it's illegal for them to do it anyway. If you put an intake on the car and it screws up or breaks (the intake) obviously they're not going to warranty an aftermarket part......same goes for exhaust. Now if that part, without a shadow of a doubt, caused something else to fail.....then that part will not be under warranty. A common one is lowering springs........they cause the stock shocks/struts to wear out prematurely because it makes them travel further than they were designed. In that case, the stock shocks/struts will not be covered under warranty. It's just common sense.

ah now that should be pinned! 1 question though...which intake is the best in terms of hp gain? i ASSUME the injen, since it's cai...anyone? that way i know which air intake i should get


As for K&N claiming 16 HP from an intake. That's a little on the optimistic side for someone putting on a SRI. In reality under street conditions it would probably equate more to 6-12hp

i thought all that is bs and intakes usually don't get anymore than like 5hp gain?

omg old thread back from the dead, reading my post on here i sound like a noob :lol:

Projekt.... you're still a noob... :lol:

just playing...

I just wanted to say something that's has been bothering me for some time now about retaining the factory warranty. People.......if you put non GMPP parts on, it's not like they can deny warranty on the whole car......it just doesn't work that way, and it's illegal for them to do it anyway. If you put an intake on the car and it screws up or breaks (the intake) obviously they're not going to warranty an aftermarket part......same goes for exhaust. Now if that part, without a shadow of a doubt, caused something else to fail.....then that part will not be under warranty. A common one is lowering springs........they cause the stock shocks/struts to wear out prematurely because it makes them travel further than they were designed. In that case, the stock shocks/struts will not be covered under warranty. It's just common sense.


this is true but the GMPP parts fall under your warrenty and will be replaced if they brake i think if so another added plus.

Also they are GM parts there is no room for bitching. So u dont need to prove that your non GM part didnt brake anything and there will be no need to fight with the dealer. Yes by law you are 100 percent correct, that the dealer has to prove your part caused the issue, But IMO i do not want have to deal with my dealership in that manner and or go thru all the trouble. For example im sure they can come up with some BS solution how so and so part voided the warranty by doing this to that which did this to that. Then they could go on to say they have so many years doing this and this many master mech. it could get ugly u catch my drift

this is true but the GMPP parts fall under your warrenty and will be replaced if they brake i think if so another added plus.

Also they are GM parts there is no room for bitching. So u dont need to prove that your non GM part didnt brake anything and there will be no need to fight with the dealer. Yes by law you are 100 percent correct, that the dealer has to prove your part caused the issue, But IMO i do not want have to deal with my dealership in that manner and or go thru all the trouble. For example im sure they can come up with some BS solution how so and so part voided the warranty by doing this to that which did this to that. Then they could go on to say they have so many years doing this and this many master mech. it could get ugly u catch my drift

read moss magnuson....

they can't bs it. they have to prove without a shadow of doubt that the problem was directly and only caused by the aftermarket part.

2 things:

1) if it's a lease, why mod it? are you planning on keeping it? that's alot of money to spend for something you'll be giving back soon.

2) since you mentioned warranty, when you lease a car you're not allowed to do any modifications, doesn't matter if it's gm or not.

ive taken my car to the dealer,withmy subs in the trunk, lip added, wing added, tinted windows.. they dont care at all.

im buying it after the lease anyways

stock i put down 153hp 151torque to the wheels. with the gmpp intake and cat back i put down 166hp 164 torque and my car is also a lease haha. im buying it back. the dealer knows i drag race my car they no i have dynoed it 2 times and they also no i drive it hard. they still dont care.

stock i put down 153hp 151torque to the wheels. with the gmpp intake and cat back i put down 166hp 164 torque and my car is also a lease haha. im buying it back. the dealer knows i drag race my car they no i have dynoed it 2 times and they also no i drive it hard. they still dont care.

Awesome to know...... :) i neeed to get my GMPP cat back