I installed the GMPP air filter kit on my 2.4 yesterday. Nice kit, everything fits nice and is easy to install. I can't tell if it increases performance, but if LOUD = HP it must help. Normal driving is pretty quiet, but put your foot in it and it gets very loud!
The kit replaces the top half of the stock airbox and uses the stock lower half with the intake tube. the top is open with the good up and seals against the bottom of the hood when closed. I like it, but it is probably overpriced.
Dennis

I installed the GMPP air filter kit on my 2.4 yesterday. Nice kit, everything fits nice and is easy to install. I can't tell if it increases performance, but if LOUD = HP it must help. Normal driving is pretty quiet, but put your foot in it and it gets very loud!
The kit replaces the top half of the stock airbox and uses the stock lower half with the intake tube. the top is open with the good up and seals against the bottom of the hood when closed. I like it, but it is probably overpriced.
Dennis


it's definately overpriced... what did you pay

I installed the GMPP air filter kit on my 2.4 yesterday. Nice kit, everything fits nice and is easy to install. I can't tell if it increases performance, but if LOUD = HP it must help. Normal driving is pretty quiet, but put your foot in it and it gets very loud!
The kit replaces the top half of the stock airbox and uses the stock lower half with the intake tube. the top is open with the good up and seals against the bottom of the hood when closed. I like it, but it is probably overpriced.
Dennis


awesome. that means i was right about what the photo was showing... kick AZZ

PICS PICS PICS!!!!! PLEASE!!!! Also how much did you pay?




BTW, did I mention.. PICS!!!!

Sounds awesome! Didn't think these were released yet!

Pics and how much!

Sorry, no pics. I paid $261.00 (15% over cost, thats what the dealer I work for charges employees) list is $325.00. I didn't think $261 was too out of line, but $325 is too much. I ordered about a week ago, so it just got released.
Dennis

wow.... 261 is employee pricing?? that sucks...

wow.... 261 is employee pricing?? that sucks...

yeah, i was going to say "261 isn't that bad..." then i read the employee part.

i mean, i am willing to pay a little more for a part thats warranted not to cause CELs or wuin my motor... but only to a point.

Sorry, no pics. I paid $261.00 (15% over cost, thats what the dealer I work for charges employees) list is $325.00. I didn't think $261 was too out of line, but $325 is too much. I ordered about a week ago, so it just got released.
Dennis


get pics! No digital camera?

wish they would have made one for us ss/sc

200 posts baby

sorry had to

yeah, i wish there were one for the SS/SC

Always nice to keep it stock as well:twothumbs

I'll need to put that intake cause in mexico you can loose your warranty even for an intake they're out of their minds

I'll need to put that intake cause in mexico you can loose your warranty even for an intake they're out of their minds
GM does not condone intakes, they condone oiled filters,get a dryflow,I just spoke with a service guy and he confirmed this.There are several peaple on this page who work at dealerships,Im sure they can find this note from gm to the dealerships to look out for oiled filters,maybe some of these guys can elaberate on this, if I could find this memo I seen on the matrix forums, I would post it,good luck

200 posts baby

sorry had to
Its all good I did the same at 500:lol:

I thought the intakes were not to be avaiable untill Sept?

I also was under the impression that it wouldnt come out til september. What is the part # for this intake?

Anyone have the part # on this kit? I work at a GM performance parts dealer and I can see if I can do a group buy if you guys would be up for that. I've found all sorts of GMPP stuff but this is the first I'm hearing about this intake so I'll definently need a #.

Let me know guys.

i'm pretty sure that i saw this on gmpartsdirect.com before

Ok, my first try at posting pictures.
http://cobaltss.net/gallery/files/4/0/5/9/Front.JPG
Part # is 17800653

Wow thats a really nice piece! I wish the SS/SC had something like this.

aren't these intakes for the 2.2 only? also did it come with instructions?

i wouldn't think that this intake would make anything louder due to the fact it uses the silencer box..

looks good, i'd buy it. I'm so sick of my injen intake hitting the engine, my intake is all fudged because of it.

aren't these intakes for the 2.2 only? also did it come with instructions?

No you can use 2.2 intakes on 2.4s

does it come with instruction?

i wonder if that filter is replaceable when it gets worn out?

that is actually pretty good!

Looks good! :twothumbs Would it be possible to get a sound clip?

Yes , it comes with instructions (In English, French and spanish). It is very easy to install, just watch the clamp sizes as there are three differant sizes. According to this instructions, this kit will fit -
2005, 2006 and 2007 Cobalt 2.2 - 2.4
2007 Pontiac G5 2.2 - 2.4
2007 pontiac G4 and Pursuit
I have no way to get a sound clip.
It does eliminate the resonator on the throttle body, the big square one and is pretty loud compared to stock when your foot is in it.
I am not sure if the filter element can be cleaned or if it has to be replaced when dirty. I will be checking on this next week when I go back to work.
Dennis

so the instructions tell you have to remove and install the new air intake?

How much did you pay for it? It looks like if you get the ram air hood, it will drop the are right on the filter.

How much did you pay for it? It looks like if you get the ram air hood, it will drop the are right on the filter.

Ram air hood??? Have you seen pics, or have a part number?

Sorry, no pics. I paid $261.00 (15% over cost, thats what the dealer I work for charges employees) list is $325.00. I didn't think $261 was too out of line, but $325 is too much. I ordered about a week ago, so it just got released.
Dennis

$293.38 from GMPArtsDirect. They also beat CrateEngineDepot on the drilled/slotted rotors by quite a bit. Still, I need to find someone who works at a dealership to get a REAL price :)

That looks really good. But damn $293 for a short ram intake. But if you got the money good buy.

It isn't a short ram. The hood seals the top and it uses the intake tube in the fender just like any CAI. The only differance is the actual location of the filter.
Dennis

i dont really like it... looks like the airbox mod only more expensive. but if you like it then good call

It isn't a short ram. The hood seals the top and it uses the intake tube in the fender just like any CAI. The only differance is the actual location of the filter.
Dennis


the tube in the fender is very, very restrictive... if that's the case, i would take it out, guaranteed better results...

the tube in the fender is very, very restrictive... if that's the case, i would take it out, guaranteed better results...

How are you guarenteed better results.. the gm intake has to had some power, other wise if the tube in the fender was so restrictive they would of made a new one that goes with the intake.

very, very restrictive? It's 3.5" necked down to 2.5" at the airbox. How much air does a stock Cobalt need?
I know this is not the ultimate intake and it is WAY overpriced, but I think the HP gain is pretty close to any of the other intakes on the market. We are only talking like 3-6 HP anyway.
Dennis

will that void your warranty? since its a GM part?

will that void your warranty? since its a GM part?

It shouldn't.

Another question no one has asked - does it throw codes? If not, then it may be the best compromise on the market (and it may explain why GM took the approach they did with the stock air box bottom).

As for the hood seal, besides having it look cool when you open the hood, the real reason GM built systems like this in the past was to seal to the bottom of a real ram air opening. As mentioned before, I would suspect a ram air hood in the works or available that matches with this intake. Then the inlet in the fender becomes a moot point. Some of the vintage systems (like the cowl induction on the Chevelles) had a vacuum driven door to open for fresh air from the hood. The stock inlet from the fender would, therefore, be more restrictive but would be the "default" inlet when the hood opening was closed.

If GM doesn't come out with this, designing one wouldn't be difficult at all. I'm getting real interested in this intake from this standpoint - it would be a step toward real ram air intake.

the tube in the fender is very, very restrictive... if that's the case, i would take it out, guaranteed better results...

Agreed, this is my whole criticism of the design utilizing the stock airbox. Only a dyno will tell what kind of gains this intake will produce, but I'd imagine removing at least the lower portion of the stock airbox will provide a better gain.

Also, couldn't you just delete the stock airbox altogether and leave the GMPP piping and filter? It'd be just like the Injen SRI.

I'm seriously considering this intake because...

1. I doubt it throws any codes
2. It's a GMPP item therefore (though you might have to argue with your local chevy tech) warrantied
3. I believe that if it doesn't function so well as is, it could be modified by reducing or eliminating altogether use of the stock airbox to provide a better gain.

Hey Lewiss "the old guy", I'm almost 50. Can you top that?
So far I haven't thrown any codes. A vintage cowl induction would be very cool, but I would be surprised if GM will make one. Maybe aftermarket.
Dennis

Hey Lewiss "the old guy", I'm almost 50. Can you top that?
So far I haven't thrown any codes. A vintage cowl induction would be very cool, but I would be surprised if GM will make one. Maybe aftermarket.
Dennis

I'm 54 (high school class of '70). But our youngest daughter says I'm forever 19. Since she's 20 now, I'm not sure if that's a compliment or a comment on my maturity :cool: .

Does the seal really seal against the bottom of the stock hood? My mechanic son-in-law and I had the hood up on my 2.4 this afternoon looking at the under side of the hood above the airbox. From the pics, it almost looks as if the intent is to seal to the bottom of an air chamber from a hood intake. It reminds me of the twin intake boxes that sealed to the bottom of the hood on the 1970 Buick GS455.

Here's a pic of the air cleaner:

http://www.dealsonwheels.com/search/detail_more.aspx?id=000626-200607-000005&photo=7

And the bottom of the hood it breathes through (note how the hood seals on the twin intake mate up to the hood openings:

http://www.dealsonwheels.com/search/detail_more.aspx?id=000626-200607-000005&photo=14

And the outside of the hood (different car):

http://www.conceptcarz.com/view/photo/99050,9518,0,0/photo.aspx

Just for rough ideas, one of this style hood scoop over the airbox seal would sure cure the restricted breathing through the fender, or a shallow but wide duct back to a hood scoop in the center, like the carbon fiber hood advertised on the board....

It touches the hood mat, but I don't think it would touch the hood if you removed the mat. I would think it would be easy to make it seal on an aftermarket hood though.

http://cobaltss.net/gallery/files/4/0/5/9/side.JPG

Dennis

That is nice looking but even my price as a parts department employee is still $250.25!
True thats better then the $325.00 it lists for but its expensive! Got to think on this one.

It touches the hood mat, but I don't think it would touch the hood if you removed the mat. I would think it would be easy to make it seal on an aftermarket hood though. Dennis

Thanks! That pic is exactly what I needed! Now I know I will order one.

One idea I had this AM commuting to work is to use the gasket to mark the hood mat (vasoline works well :) ) and cut the mat just outside the gasket. Next step is to build a short - one inch or so - lip to attach to the hood to stick down to engage the gasket firmly. Thin aluminum c-channel extrusion might work, formed in the shape of the gasket/air box top and bonded to the hood. Finally, cut through the hood in the center of that, and place a hood scoop over the hole (with appropriate screen to keep from sucking in birds and small children :lol: ). I have some ideas for an aftermarket scoop that should match the styling of the hood (mostly the tapered ridge that sits almost over the airbox).

Don't know if that explaination makes sense, but it's clear in my head!

Oh, and the fact that the gasket doesn't actually seal well against the hood mat is probably why you're getting so much intake honk in the cabin. I don't know if having it seal well and breathing through the hood would help that or not.

Jay L.

damn i think i really want one of these. id just like to know if it is worth it. id like to go for the official GM product.

Thanks! That pic is exactly what I needed! Now I know I will order one.

One idea I had this AM commuting to work is to use the gasket to mark the hood mat (vasoline works well :) ) and cut the mat just outside the gasket. Next step is to build a short - one inch or so - lip to attach to the hood to stick down to engage the gasket firmly. Thin aluminum c-channel extrusion might work, formed in the shape of the gasket/air box top and bonded to the hood. Finally, cut through the hood in the center of that, and place a hood scoop over the hole (with appropriate screen to keep from sucking in birds and small children :lol: ). I have some ideas for an aftermarket scoop that should match the styling of the hood (mostly the tapered ridge that sits almost over the airbox).

Don't know if that explaination makes sense, but it's clear in my head!

Oh, and the fact that the gasket doesn't actually seal well against the hood mat is probably why you're getting so much intake honk in the cabin. I don't know if having it seal well and breathing through the hood would help that or not.

Jay L.

Your idea sounds great, except for the first time it rains...

Now if you could put in a flapper valve with a rubber gasket, or a sliding gate on the underside of the hood to seal it off in case of rain, you might have something. You could install an actuator cable under the dash, so if you hit a shower, just pull the lever.

The HSU would be to rig it with a solenoid and a moisture sensing switch that would handle the task automatically - cause you know, you might forget one time and then....

Your idea sounds great, except for the first time it rains...

Now if you could put in a flapper valve with a rubber gasket, or a sliding gate on the underside of the hood to seal it off in case of rain, you might have something. You could install an actuator cable under the dash, so if you hit a shower, just pull the lever.

The HSU would be to rig it with a solenoid and a moisture sensing switch that would handle the task automatically - cause you know, you might forget one time and then....


it wouldn't be as big of a deal as you think that it would... as long as you were not underwater, you could just shield the top (plumb) of the filter so that the rain wouldn't drop on it... it would just fall into the filter box and run out the bottom.

GM does not condone intakes, they DON'T condone oiled filters,get a dryflow,I just spoke with a service guy and he confirmed this.There are several peaple on this page who work at dealerships,Im sure they can find this note from gm to the dealerships to look out for oiled filters,maybe some of these guys can elaberate on this, if I could find this memo I seen on the matrix forums, I would post it,good luck

So, I guess K&N and AEM are out!:bye:

How are you guarenteed better results.. the gm intake has to had some power, other wise if the tube in the fender was so restrictive they would of made a new one that goes with the intake.


because taking it off has less restrictions... a lot of the problem is the big ass bong under the car that the air has to travel through before getting up and into the engine... the intake was designed to be quiet, not the best performing... if it was designed with performance in mind, they wouldn't have come out with a GM intake, would they? :twothumbs

Now if you could put in a flapper valve with a rubber gasket, or a sliding gate on the underside of the hood to seal it off in case of rain, you might have something. You could install an actuator cable under the dash, so if you hit a shower, just pull the lever.

I've been doing some more looking and it looks like I will build a thin, wide duct on the bottom of the hood to move air from a scoop in the middle of the hood to the air box seal. This is because the air box strattles the ridge on the hood, making placing a scoop directly over it impractical. Anyway, with the duct (which, BTW, is an old school GM approach) there would be room to place a flapper (again, another old school solution, but then they were vacuum operated).

The nice thing about the design is that the stock inlet would be the back-up - sealing the cold air inlet wouldn't starve the engine (any more than it is without the hood intake).

I've been doing some more looking and it looks like I will build a thin, wide duct on the bottom of the hood to move air from a scoop in the middle of the hood to the air box seal. This is because the air box strattles the ridge on the hood, making placing a scoop directly over it impractical. Anyway, with the duct (which, BTW, is an old school GM approach) there would be room to place a flapper (again, another old school solution, but then they were vacuum operated).

The nice thing about the design is that the stock inlet would be the back-up - sealing the cold air inlet wouldn't starve the engine (any more than it is without the hood intake).

i'd suggest that you add a drain hole someplace on your duct. ideally where it would not drip on anything important. a 1/4 or maybe 3/8 hole should do nicely.

it wouldn't be as big of a deal as you think that it would... as long as you were not underwater, you could just shield the top (plumb) of the filter so that the rain wouldn't drop on it... it would just fall into the filter box and run out the bottom.

The only way this would work is to put a ball valve at the lowest point of the air box. When water would enter, it would float the valve and run out. This would allow the airbox to be pressurized by the ram-air effect of the hood scoop - assuming you want the ram air effect and not just a source of cold air.

The ram air effect is difficult to achieve because the engine is trying to use almost 300cfm at WOT, max rpm while the scoop is trying to feed it. About 1 lb "boost" or positive manifold pressure will theoretically yield a 5% hp increase. To achieve this amount of manifold pressure typically takes a vehicle speed of well over 120mph, even with an "indy" size hood scoop.

The moral of the story: On a Cobalt, the ram-air effect would be totally useless in 1/4 mile drag. It would make some usable HP if you were trying for a top speed run though. For normal street applications, the cold air effect (increase in density) will be of much greater importance than the ram-air increase in density.

The moral of the story: On a Cobalt, the ram-air effect would be totally useless in 1/4 mile drag. It would make some usable HP if you were trying for a top speed run though. For normal street applications, the cold air effect (increase in density) will be of much greater importance than the ram-air increase in density.

I fully agree. It's an "old school" habit to call it "Ram Air." That was advertising hype (still is - a couple years ago Pontiac said the Grand Am GT had "ram air," which was hard to believe because the air box was open to the fender, negating any pressurization effect, much like the GMPP will be on the Cobalt).

Speaking of ram air, there's a reason the scoops on Pro Stock cars are so tall. You have to get that high to get out of the boundry layer of the hood and actually get good positive flow at speed. For the street, I prefer a much lower scoop.

I'll settle for a nice scoop (more for looks-ego than anything else) and outside air ducted from the scoop to the GMPP intake. I believe it will also quiet the intake honk at full throttle a bit, also (but that may be whishfull thinking).

We plan to get the intake ordered today. Will keep the board informed (with pics) as this evolves.

Dennis, if the duct design works out, I'll pass the template along to you for your installation if you want to do some fabricating.

-J-

whats the cheapest place that has this intake online? i just cant seem to find it.

whats the cheapest place that has this intake online? i just cant seem to find it.

I believe GMpartsdirect.com has it at a decent (though stillIMO overpriced) price

whats the cheapest place that has this intake online? i just cant seem to find it.

gmpartsdirect.com $293.38

Go to their main page, put the following number in the search field just under their logo:

17800653

isnt there anywhere that has it for like 250ish?

Speaking of ram air, there's a reason the scoops on Pro Stock cars are so tall. You have to get that high to get out of the boundry layer of the hood and actually get good positive flow at speed. For the street, I prefer a much lower scoop.


Right - on a pro stock car they want the bottom opening of the scoop to be a bit off the hood, since the air right on top of the hood is turbulent. They also generally want the middle of the opening to be on a line drawn between the top of the frontal area (ie top of the nose) to the front of the roof.

Too high/too big of a scoop causes too much drag and slows the car down, while too small of a scoop doesn't allow enough air in and hurts power that way. Pro stock guys, especially guys like WJ and Greg Anderson; do a lot of wind tunnel testing to optimize their hood scoops and bodies in general.

$261 and it's not even a cold air intake..you can find a CIA online for $160 or even an injen wich is my best,.. was $230 and is a CIA. i've seen them before online and honestly it's the same thing as that "make it your self" intake system you can buy at pep biys where you buy each peice seperatly

-drew

It IS a cold air intake, and yes it is overpriced. I would say it is a higher quality piece than a do it yourself. It fits like it should and dosen't rub anywhere like I here some of the other kits do, so maybe you get what you pay for.
Dennis

it's a WAI .. it is still under the hood and in the engin bay it just sits in the stock airbox without the top on it..mine dosnt rub if you install it correctly

-drew

It's a cold air intake. The box is sealed by the hood when it is closed. Air comes in from the fenderwell fust like yours. If the intake being mounted under the hood makes it wai, yours is too since it has to go through the engine compartment to get to the throttle body.
Dennis

Correct me if I'm wrong. This is 300 bucks for an air filter and a plastic box ?

Correct me if I'm wrong. This is 300 bucks for an air filter and a plastic box ?

Well, it also has a nice shiny intake tube :)

It's my opinion that the open top and seal aren't designed to seal to the under side of the stock hood, but to a duct mounted to the bottom of the hood that ducts air from a scoop to the airbox inlet. This has been typical GM practice for cold air induction since the '60's. I wouldn't be surprised if there isn't a matching hood in the works.

I ordered one of these yesterday and I will be fabricating my own duct to bring in air from a center mounted scoop to the top of the air box. That ends the CAI controversy - it would then definitely be a CAI system. The stock inlet would then be a "back-up." The so-called Ram Air on the Grand Am a couple years ago was similar, except the duct was fixed to the top of the engine instead of to the hood.

Note that we were told that these are temporarily out of stock, but that a new batch is expected within 1-2 weeks. There was also some indication that these will not be produced after a couple of months, so they may be a moot point soon. Hopefully I will get one before GM cancels them. GM has a long history of this with their performance parts - very low production, no anouncement of availability or cataloging of items. If you are "in" with GMPP, you know. If not, they're here and gone before you know about it.

Dead cost is like $240, so you won't find it much cheaper than $250-260.

id take it for 260 if i could find it that cheap

This intakes cost is $227.54, MY cost as a GM parts department employee is 10% over the dealers cost and that puts it at $250.25 + tax. I can't imagine you finding it much cheaper then this. But if you can let us in on where your getting it from!

Lewiss: Well, it also has a nice shiny intake tube.


That sounds better. I didn't see a picture or description on the GM web site.:red:

http://www.gmpartsdirect.com/results.cfm?singlepart=1&partnumber=17800653

DESCRIPTION: Air intake

Performance Air Intake Kit

This kit is NOT for SS and SS supercharged Cobalts.

thats what it says on the site. i was really considering this intake too. do they have one specifically for the SS 2.4?

This kit is NOT for SS and SS supercharged Cobalts.

I'll post how it works on my 2.4 SS, since I already have on in transit. Mine will be a through-the-hood outside air intake, as I plan to cut a hole in the hood above the air box and put a scoop over it. This won't be ram air since I don't want to put a scoop on it that's tall enough to get out of the boundry layer, but it will still be cold air intake since it seals against the bottom of the hood and will be breathing through the hood.

If it throws codes, I will NOT be a happy camper! :cussing:

If the intake and my scoop (both in transit) come in before the weekend, I will be busy butchering a perfectly good SS hood and installing a part that is specifically prohibited for my car :lol: Maybe I'll try just the intake first BEFORE cutting the hole! :cool:

Hey, DeniSS, did you see the post that says GMPartsDirect says your intake WILL NOT work on a 2.4? :rolleyes: Are you getting codes? I'm about to do something foolish and install mine when it gets here! :lol:

I am having no problems. The instructions say it will work on these cars,
2005, 2006 and 2007 Cobalt 2.2 - 2.4
2007 Pontiac G5 2.2 - 2.4
2007 pontiac G4 and Pursuit
I will try to scan the instruction sheet and post a pic tonight.
Dennis

AWwwwwwe DAYMN!! I'm getting one F R E E !!!!!!!!!!!!!! (does the cabbage patch)

A dude at Adscom the people who install this stuff for dealers owes me a favor and he's paying up with the intake and an SS underhood blanket!! (the black mat on the inside of the hood)

Total cost to me Z E R O !!!!!!!!!

Damn its good to have friends in high places owe you favors! :lol:

I am having no problems. The instructions say it will work on these cars,
2005, 2006 and 2007 Cobalt 2.2 - 2.4
2007 Pontiac G5 2.2 - 2.4
2007 pontiac G4 and Pursuit
I will try to scan the instruction sheet and post a pic tonight.
Dennis

OOPS! Sorry I mis-spelled your name :red: Fingers faster than brain.

Glad to hear the instructions don't match that web site. Stupid of them to cut out customers needlessly.

I hope to take pics and do a "how to" on mine. And thanks for your pics on this thread - it is what got me started on this project.

later,

-J-

http://cobaltss.net/gallery/files/4/0/5/9/Image1.jpg
http://cobaltss.net/gallery/files/4/0/5/9/Image2.jpg
http://cobaltss.net/gallery/files/4/0/5/9/Image3.jpg
I don't know if I did this right, but I think these are the scans of the instructions.
Dennis

http://cobaltss.net/gallery/files/4/0/5/9/Image1.jpg
http://cobaltss.net/gallery/files/4/0/5/9/Image2.jpg
http://cobaltss.net/gallery/files/4/0/5/9/Image3.jpg
I don't know if I did this right, but I think these are the scans of the instructions.
Dennis

Thanks!

This gave me a "head start."

Interesting that the first page specifically says it works on an '06 2.4.

EVERYONE: Ignore the web-site and read the GM publication that DenniSS provided. :cssNET:

ok well i defintly am gonna order this. but i dont wanna void any warranties in any way. how should i go about doing this?

ok well i defintly am gonna order this. but i dont wanna void any warranties in any way. how should i go about doing this?

order it, put it on. it won't void anything. if the dealer installs it, then it has the same warranty as the rest of the car. not a bad deal, depending on what they want to install it.

how much do you think it would cost to get the dealer to put it on?

how much do you think it would cost to get the dealer to put it on?


hmmm... i have no idea. AS i recall, the catalogue lists an approx install price. maybe you can find out at the dealer.

or on the GM accessories website.

the part number in those scans is different from the one on the site...

i have another question too.

my friend is getting one for his mustang, but hes getting a tuner too. will i need to get a tuner or anything for installing this?

the part number in those scans is different from the one on the site...

Mine just showed up 10 minutes ago. When I pick it up I'll check the instructions against the ones posted, and the part numbers against the number on the box and report back.

I plan to do the install this weekend. I also plan to take pics and post a "how to" (not that this is a difficult job, but since I'm making mine through-the-hood functional I thought I'd share how that goes).

Mine just showed up 10 minutes ago. When I pick it up I'll check the instructions against the ones posted, and the part numbers against the number on the box and report back.

I plan to do the install this weekend. I also plan to take pics and post a "how to" (not that this is a difficult job, but since I'm making mine through-the-hood functional I thought I'd share how that goes).

Looking forward to the pics!

Since your cutting the hood what do you plan to do for the rain and or snow?

Since your cutting the hood what do you plan to do for the rain and or snow?

I've run open hood scoops in the past and have had little trouble with rain. A hydraulic lock comes about because the intake is submerged and ingests solid water. My scoops have never taken in anywhere near that much water. That said, I've also added a flapper to some of my scoops to deal with this.

Here is Denver we don't get that much rain but snow in winter/spring is a definite issue. My plan is to get the system installed and running, then build a flapper for both the scoop and the fender inlet. These will be operated by a door lock solenoid (one for each). I will wire them so that pressing the momentary switch one way will open the hood one and close the fender one. The other way would do the opposite. That would leave me with the stock system for inclement weather.

right now I'm a bit concerned with the size of the opening in the scoop I've chosen. It's a little over 5 sq in, or about the same as a 2 1/2 dia tube. The scoop is a compromise since I couldn't find anything I really liked. I'll run it and see how it goes. I think it's still more sq in than the smallest part of the stock in-fender intake silencer. What I really wanted was a 1x6 opening NACA duct, but installing one takes a lot more body work than the add-on scoop I'm going with. I'm also adding wide hood stripes to integrate the hood scoop visually. Pics will definitely be posted (unless I'm embarassed by the result :lol: ). It should all be done by early next week, but things have to be done in a very specific order.

-J-

Well at least it sounds like you've thought though cutting your hood for this scoop.
Can't wait to see your picks! Now are you doing a forward facing or a rearward facing scoop? Since you speek of cutting your inner fender I'd have to guess forward that way the air would be able to pass though so that its always got a supply of cool fresh air and it never gets a chance to be warmed by the engine compartment, right.

That hole in the fender liner will work 2 ways you know. First air will be able to flow though and so will any water that does find its way around your flap.

This sounds like a pretty cool idea and I can't wait to see your pics to see if it turns out like I'm thnking it will.

That hole in the fender liner will work 2 ways you know.

I've managed to confuse you. :) I'm cutting a hole in the hood directly above the air box (inside of the area where the seal on the new air box top seals to the hood). This will allow outside air to pass through to the filter. I will cover it on the outside with a scoop. The scoop will be forward facing because it is about half way down the hood, too far from the windshield to take advantage of the low pressure area. The opening will be in the boundry layer, so won't get any ram air effect, but the flow there on most hoods is usually fairly neutral to positive so the intake can pick it up.

Now, as for the fender - I was refering to the fact that the new air cleaner sits in the old air box bottom, which still has the stock intake through the fender. I won't be cutting anything there. I will, however, consider putting a butterfly valve or flap in the stock air box intake hole to force the system to breathe only through the hood for good weather. OTOH, I may not bother, but will still work on a flap to block the hood intake for bad weather (in which case it will breathe through the stock inlet).

Does this make any more sense? :confused:

Yup gotcha now! Still wanna see them pics cause this sounds cool!

Best of luck man and don't forget the pics! :D

I think a NACA duct would be cool. If you cut a neat hole, you can use panel bonding adhesive to bond the scoop to the bottom of the hood. I put two NACA ducts on a super comp dragster body (to cool the computers) using this method and they look good.
Dennis

I think a NACA duct would be cool. If you cut a neat hole, you can use panel bonding adhesive to bond the scoop to the bottom of the hood. I put two NACA ducts on a super comp dragster body (to cool the computers) using this method and they look good.
Dennis

Here's the article that had me thinking about a NACA duct:

http://www.revlimiter.net/mods/duct_install.html

None of the local racing supply houses had a duct. Plus, while I'm not worried about the install I was concerned about how to duct it to the air box and seal it.

I'll be installing the intake tomorrow AM (Saturday). Wanted to do it tonight but I'm not much for all night installs any more. I'd rather sleep in and do it rested.

-J-

Hey roccobladr, what number is different? 17800653 is the right number. 88967487 is the part number for the instruction manual. Every GM part has a number, including instuctions. I guess you could order just the insrtuctions, butI bet your parts person would not be happy!
Dennis

Is the install done yet? It'd be awesome if you could get a sound clip to go along with the pictures!

Hey roccobladr, what number is different? 17800653 is the right number. 88967487 is the part number for the instruction manual. Every GM part has a number, including instuctions. I guess you could order just the insrtuctions, butI bet your parts person would not be happy!
Dennis


ohhhh haha. didnt realize that lol.

im probably gonna order this soon. if i order it online and dont tell my dealer or anything and if i ever need to have warranty work done...will i be ok? or do they have to OK the intake before i get it on?

I've posted my GMPP install over on the How To forum at this location:

http://www.cobaltss.net/forums/showthread.php?p=484135#post484135

Have a look! The hood scoop isn't done yet. I have an appointment with the shop that will do my hood graphics on Wed., 13 Sept. I will take pics as we work. When it's all done I will update the How To with the hood alteration part.

any change you could get a sound clip? i think im gonna order this within the next week or 2. also, how much did you get it for?

any change you could get a sound clip? i think im gonna order this within the next week or 2. also, how much did you get it for?

It was a gift from my son-in-law who is an ASA mechanic and has connections. I don't know what he paid.

I don't have any way to record a sound clip - sorry.

DenniSS, do you have a sound clip of yours?

-J-

Part 2, the hood scoop install is posted at:

http://www.cobaltss.net/forums/showthread.php?p=504116&posted=1#post504116

whats the throttle botty seal ring that comes with the gmpp intake?

whats the throttle botty seal ring that comes with the gmpp intake?

It basically acts as a gasket between the plastic 90 degree part that plugs onto the throttle body and the throttle body itself. Otherwise the plastic probably wouldn't seal well (it's also oversize compared to the throttle body outside diameter to allow for the seal ring).

Once you get the old intake off, you slip the seal ring over the throttle body like a big rubber band and then slide the plastic 90 over the seal ring.