StyleandSpeed

Alrite so i got an 08 ss/tc and its stock for now and im getting stuff done to it. My buddy has an 05 sti with a turboback exhaust and a tune bumping him up to 320@ the wheels. Now here is what im getting done to my car with the parts on its way, 3inch catless dp,intake and a hot pipe with a BOV. We wanna do a 40 roll, hes an sti fanboy and I gotta say those cars are sweet cuz I test drove one but hes saying cobalts are slow and crappy,typical sti fanboy with the ego bigger then the wing on their car. Im getting Vinces tune from CIA and im wondering what PSI's I should crank it up to so I can pwn him by atleast half a car. Idk If I should NLS or not but I doubt hes gonna be powershifting and we're not gonna break boost or use race fuel either.Just a regular roll race on a local route where I know theres never cops and not alot of ppl drive ther. I know these cars are capable of more then the credit that ppl give them especially with the SC ones not having the best rep. Some schooling here would be appreciated!

austinss

I'm running 24PSI with a considerably less amount of mods (than your getting) and I'd lay down cash with me winning.........

06SS/SC

He isn't putting 320 to the wheels with just turboback and tune. More like 290-300. From a roll, you'll probably win. From a dig, you're toast. I'm an STI fanboy as you put it and I don't think Cobalts suck, they are quick cars with some downfalls. Winning by 1/2 a car from a roll isn't being pwned but you'll probably put more than that on him if you can drive. 40 roll isn't a sweet spot for the STI.

StyleandSpeed

True that but we dynoed his subie and it was 320 at the wheels with the a turboback and a good tune, it was roughly 400 at the crank. My cars lighter tho and got the fwd advantage. I raced him when I was stock and he gave a head start by like a car and I gunned it in second just to see him catching up at the speed of light while he started in 3rd! Bet he was break boosting tho.

Lol your crazy,is that even safe to run that much psi's on a stock turbo? Btw what are you at the wheels?

ajjaro

you'll win

tREBs

Should be pretty close me thinks.

Bades

well if it put down 320awhp it got alot more then just tbe and tune...stis only put down 260awhp stock ur not gonna gain 60awhp from an exhaust and tune....

nicksredline

may i ask what edzactly is the fwd advantage?? lol its always a disadvantage unless ur talking about weight because then u don thave the transfercase but other than that fwd is poop compared to awd( i drive a redline and i love it but AWD would be AMAZING!!).

Also ive seen some huge boosts in numbers by just an exhaust and a tune( exhaust will free up the flow so it wont limit the turbo as much and then a nice lean tune to grab some high numbers... never said u couldent back it down. also he could have been on a happy dyno that day.( maby rilly cold dence air that day)

StyleandSpeed

yes you are right front wheel does not have the greatest advantage but keep in mind that from a dig. From a roll awd shouldnt be as fast as from the start 0-60 sti's are qucik 50 and up is where the fwd kicks major ass over rwd and awd.

austinss

Hey Black, as far as 24 PSI being safe, IDK to tell you the truth, a couple of others are running the same and then some running even higher boost, time will tell. My clutch doesn't slip what-so-ever and my car pulls like a bitch. A STI with a tune and exhaust..meh..I don't think it would be that hard for me to take. For your other question, I haven't dynoed it yet.

sstaton1983

im spiking 25psi and holding 23 with no probs on stock boost pipes or clutch. my only real trouble is getting traction, as soon as i hit boost my tires go into explode mode all the way through 3rd.

StyleandSpeed

lol thats awesome. do you know what ur at the wheels?

joemama

lol black on black what is this nonesense about fwd being better than rwd after 50 mph?

awd yes its better up high but rwd will own fwd no matter the speed.

Mike09SS

why not? the ss/tc can put out 60whp+ with just a tune...

austinss

Cause the LNF is just a freak of nature. I'd say b/c of how much our cars are controlled by the computer, I'm pretty sure the sti's can't be changed as much on a tune alone.

FutureEcotecOwner

I raced an 09 WRX with intake, exhaust and tune and from a 20 roll we were pretty even, but from 40 I pulled him by about 1-2 cars. I also raced an 09 STi from a 40 roll, pulled him by a few cars. I also just raced an Evo 9 with bolt ons, cams, and a tune and from 40 to 120 we were dead even. These cars are great roll racing cars, so I think you will get him if that's all he has done.

Mike09SS

im pretty sure the new evos with an exhaust and tune pick up even more than our cars. I think you need to do a little more research. An exhaust on an sti is HUGE for them.

slowswap

If he truly dyno'ed at 320 whp, it will be real close. Drivetrain makes no difference when talking whp numbers. If you're 320, and he's 320 the only advantage you'll have is weight.

FutureEcotecOwner

And gearing

Bades

bc i work for subaru and do side work with a tuning shop in my area that specializes in subbys.... im just telling u guys wat ive seen in person on a dynojet dyno....

austinss

I need to do a little more research....yeah...prob not. Key word in my last post was "think." I didn't say it was a fact. I'm not trying to start an e battle here. I'm just saying I've known several people with sti's over the past years some of which had exhaust and intake, a couple others had a tune along with it and def didn't feel like an extra 60whp like I can feel in my car. Too bad none of my friends still have those cars....I could put it to the test.

StyleandSpeed

Idk I've seen some sti's get spanked by cobalts on youtube on a 40 roll. Same with Evos. Besides his 60+ accelaration wont be as good as mine. Awd is nice but not when you're doing over 60,massive drivetrain loss. Heres the bottom line tho, If Iam anywhere around 320 @ the wheels, then on paper ill have him. SS/TC weighs less and has the FWD advantage. But like I said when we raced he had me by like 4-5 cars when I was only at 240whp. Lets see what kind of magic vince could stir up for me. I got my trust in him!

joemama

damnit black on black.


what is this fwd advantage?


and how is this better after 50mph than a rwd car?

light it up

cobalts get so much power out of a tune because of direct injection. its science.

StyleandSpeed

I never really said anything about rwd if I did then my bad. I don't know too much about it other then it kicks fwd ass. Awd on the other hand well you know...