Ok guys, I've been on a dyno twice now, completely stock. I went with a friend the 2nd time and the guy offered me a cheap price, plus his girlfriend wanted to hear the Cobalt on the Dyno. Anyways, the first time my best pull was 229.4 hp and 196.1 tq. The 2nd time I went my best was 228.8 hp and 196.7 tq. They were both 3rd gear pulls.

MY QUESTION TO YOU IS

With a CAI (Injen or K&N) and a full exhaust set up (header, catless downpipe and cat-back system) do you believe 250whp is in reach? I'm not trying to propose that I have a factory freak, I just want to know if this sounds logical. Any input is appreciated.

 

I think it would be close with those mods.

 

nope, not off the stock boost, youll lose some boost from the wide open exhaust, youll need like at least a 3" and some ngk plugs.

also, a 3rd gear pull isnt a relative pull for our car, 4th gear is where you will see the real numbers. youd be in the 215whp range prolly in 4th, so with intake full exhaust 3" pulley and plugs youd be like 245ish

 

Crap, I wasn't even considering the loss of boost with a new exhaust. I was hoping to be able to make around 250 with a stock boost setup. Thanks for the info. Oh, and on my first time on the dyno, my first pull was a 4th gear pull. 222.?? summin. Honestly can't remember because he only prints out your best/highest pull.

 

Just because your boost drops due to better flow, doesn't mean you are making less power. It is more efficient power. Better flow is always....well better.

 

i would say that you wold be around 235-245 with those mods. i was figuring that with stage 2, Fujita intake, and GMPP exhaust i would come in around 265-275 so back out the 40 hp from the stage 2 and there you have it.

 

AHAHAHAHAHAHAHAHAHAHAHAHAHA not even close try 245 250 loser

were talking whp and stage 2 gives u a dyno proven 20 whp not 40... must be some expensive stuff your smoking. j/k but for real, those estimates are way too high.

 

wow, talk about inapropriate...

there's really no way to guess what mods will do... put them on, and get it on a dyno..

to the original poster, just so you know, most cars dyno much higher hp than the rated 205

 

I gotta disagree on the third and fourth gear pull philosophy. Neither gear for us is a true 1:1. I have pulled in 3rd and pulled in 4th and seen at most a 5hp difference either way. I like 3rd gear pulls because they don't take as long so there is less stress on the motor and less heat soak.

 

get stage 2 with those mods and youll be good to go

 

yes however, the boost is lowered from the stock boost, making levels too low to truly be efficient, running 9.5-10 psi on exhaust will make the exhaust half obsolite.

actually if you use your search button, youll find numerous stage 2 dynos showing 18-24 whp gains from stage 2 alone . Also i was kidding, and i hope he knows that ... also just because an intake gives you 10 hp and a stage kit gives you 20, and exhaust gives you 20 doesnt mean that all together you'll get 50, some of the power cancels itself out.

thanks for coming out.

i agree however, to try and keep some order and organization, and seeing how most people post 4th gear pulls, its easier to make the comparison gear to gear, making his 4th gear pulls more useful.

 

easy with the bashing man!

 

only people in the dungeon have a sense of humour?

 

10 PSI is still 10 PSI though. The engine itself is making the same power as it did with 12 PSI.

 

Im still trying to guess my WHP rite now, with all my current mods. Im runing 17psi but next month i will be upgrading to a race gas tune which means more timing!!!

and the one thing i found out when tuning my ecu was that GM had the boost set at a max of 65%....I guess they want to be EXTRA careful?

 

So yeah, I guess I'll try to save this thread. Thanks for the input. At the end of the day, all I can do is bolt them on and put it on the dyno.

 

Let us know the numbers / what mods.

 

well mattyfinch don't even get me started on you! you're a *** bubble if i've ever seen one! the best part of you ran down the crack of your momma'a ass then down her leg and wound up as a brown stain on her matress!! there have been more members on this site that have had problems with you than can actually stand you! Jonel put the GMPP Performance catback and got 12 HP at the wheels, fujita advertises 14 HP at the wheels, and GMPP advertises 40 HP from stage 2! You do the ****** math ********! by my count that's 271 HP pecker snot! now we know the GMPP catback will perform and as long as the other two perform as advertised that's what you get!

EDIT: to your point about the mods when put together don't add on each other don't you think that opening up the intake and exhaust would benefit stage 2's more HP and higher boost levels and yield more HP? think about it!

 

Now now fellows lets not get into a verbal argument. Personally the Stage II from GM is very conservative. You'd be better off getting some 60's a smaller modular pulley system and a HP tune.TAG is claiming about 40 whp with their Stage 1 Kit. This is what I am doing with my tax money refund. Maybe throw on a GMPP exhaust if I hfeel like it. The poster above who was saying everything doesn;t add up like you would think is about correct. The exhaust being more free flowing does open up your car, but here is the problem. GM is claiming 40 hp over their stock claim of 205. Actually most cars are dynoing between 210 and 217 stock, so 245 minus 217 is in the ball park of 28 hp. Thats not alot. Go with TAG lots cheaper, 550 or 500 if you have HP tuners available and know someone who could flash your ride for you.

 

haha well when you can show me a dyno for some with intake exhaust stage 2 and nothing else running 271, then we will talk, and were talking whp again perhaps you have issues with the difference between crank and wheel horse power?

As for your comment, you a noody fuckbag who saw one negative comment from 2 people about the same dead issue and took it upon himself to higher then thou and continue to bash me for no reason. Its fine, your car is slow, your a ******* hick, and smeell worse then the apparent stain i should have been left as. When you do math, which apparently you didnt do much of, there are variables.

i.e. gm rates our car at 205, which is underrated, so lets say 215 whp as a standard.

215 whp... plus on the high end, 25 whp from a stage 2, which will never happen on the stock stage 2 pulley, thats 240.
240 plus the 8 whp youd be lucky to see off any intake, and thats like if you get struck by lightning, thats 248, PLUS the 12 whp you swear your 2.25" catback gives you, by my count, at the high end of things, thats 260, on a good day to the wheels. Now tell me, how is it that people with a ful exhaust, intake, stage 2 with hptune and a 2.8 are hardly seeing much higher? apparently 2psi a dp and header accounts for 6hp?

dont ******* pretend you know what your car is making, you have no idea, and get mixed up is a these huge numbers you would love to imagine are real.

Next time you call out someone, for something you cant prove, and then try to bash them about something that never happened, and was a mild inconvience 3 months ago, you might wanna sit for a second and realize, your a **** bag, no one ******* cares, and you cant add, WTF ON THE PLANT MAKES YOU THINK YOUR STAGE 2 CAR HAS 275 whp is beyond me and anyone else haha...******* noob.

stage 3 at sema only laid out 247.
guys running the 2.6 only see 270... hmm, something missing boosted, maybe its your ability to ******* ADD

as for the **** nuts that dont like me, thats fine sidejam is a skinny **** beans nerd, and no one at the cobalt meet even noticed he existed, and for good reason. Hattrickstu i wont even start, i think you and him are cut from the same hibily cloth, go run around in your stage 2 gto destroying 900hp beasts. Ron9919 is a ******* idiot, and mase is cool, no issues there... you have an issue beyond this, pm me *****, cause i already look like an *******, but now so do you, how much further you want your largely unknown and less then important existance here to go?

 

Chill the *** out, we are here to help each other out not bash, make fun of or talk ****. guess you got reason but PM **** like that to avoid akward threads.

 

Thanks. Alteast someone freakin said it.

Guessing will just lead to dissapointment and it's just plain misleading.

Maybe people respond to you negatively because you're making things bigger than they are. It's not that serious...give your opinion...they can take it or leave it.

 

ok sperm burper here's the link to Jonel's thread about his GMPP exhaust giving a 12 HP increase!

first his best two stock pulls

1.

2.


next best two pulls with only GMPP catback
1.

2.


and the link to the thread that has all his info on it...

https://www.cobaltss.net/forums/dyno-results-170/my-gmpp-catback-dyno-results-32554/

also heres a Fujita dyno comparison stock vs with CAI



and if the end result of the stage 2 is 245 hp and you add these you certainly should be ATLEAST 260 and as i'm saying closer to 270.

i can back up what i'm telling you with facts and dyno results all you have is bullshit so go shove that up your ass and rotate until your boyfriend comes home!

the disadvantage to this is you lose your warranty! also i have head stories of members getting stage kits for other venders or that did the tune themselves and the tune was off and they burned holes in their pistons or caused other problems. the stage 2 i have in my room i got for $550 and i'll get the reflash for free from my buddy at the dealership.

 

Zomg Rice Math Ftmfw!!!!!!!!!

 

260-270 whp is about 300 to the crank. GM had to P&P the head and blower, up compression ratio to 10-1, put a set of comp cams with somewhere around 250 degree duration and .450 lift, bates valve springs to support it, and drop to a 2.9 inch pulley to get there. How is a Stage 2 kit and intake and exhaust gonna do that?

FYI, I dynoed right before HPT support came out on a stage 2 tune last summer, 2.8 pulley, honed manifold, corsa sport exhaust and injen intake and hit 237 whp and 219 ft/lb torque. In Pittsburgh. Guys with 2.5 pulleys and 60lb injectors with a cat delete and intake were at 260-270 that same day.