just like the title says. I wanna go bigger turbo, really like the treadstone
set up, if I go bigger turbo would I necessarily have to rebuild the engine?
or would I be safe on all the stock internals? is there any better turbo set up
like zzp ?

 

treadstone is nice (i got their kit)

 

What all do you have done to your motor

 

No need to build the motor unless you want 475+whp, I'd be more worried about the trans at that level anyway.

If you do a quick search you will find a threa dedicated to this very question, and options.

Zzp
Pwerks
Hahn

To name a few.

 

Since you are lazy.

https://www.cobaltss.net/forums/2-0l...cement-282332/


I would have no problem running my Balt 375-450whp on a nice tune all day.

 

ive ran mine to 442whp 450lbs at 6200rpm on a completely stock motor and fuel system on our mustang dyno. put over 75 dyno passes, 30k hard driven miles and so forth and i leaked my old motor yesterday and it was near perfect. shows to go what a good tune will do and how long your motor will last.

realistically if your shooting for more then 450 i would consider a motor build or atleast some minor head work if you plan to turn rpms past 6200. although i will be planning a budget build here soon. budget by meaning it wont cut corners but im only shooting for 400whp for a stout street and road coarse car but im not releasing specs on it yet. check us out at performance autowerks(you can pm me) id be more then happy to answer questions for you

 

I would be happy with 450 to wheels. would the Hahn turbo get me that or is that
not a good turbo

 

its turbo and definitely good for the power. people on here say its old and laggy, but in a way it saves your tranny. it really just depends on what your prefs are.

 

how about the efr many people run them

 

58/58 or 58/57 etc etc precision turbo + treadstone kit under under 3k

 

afr is definitely nice to produce power and is basically just like stock, but with more power. it's decent priced seeing as how its direct bolt on and you just need a tune for it. most people go with it because it is known for the company ZZP. don't get me wrong though, if I had the money, I might have ended up with one...

Personally though, the wr3 is catching my attention more and more. Some serious things coming from it. check out kdubs car.

 

The Hahn kit won't get you to 450whp, click the link it will answer all your questions.

Seriously check out pwerks, they offer a ton of different options.

 

Thanks for the vouching everyone. We have been around the lnf since 06 we definitely know our way around building reliable power

 

omiotek, what set-up did you have for 440whp/450wtq??? that was a monster....lol

 

Im building my own kit. This way saves money and i get whatever turbo i want. Im going with a custom made billet 58 comp with a stg3 turbine. Little more effort but this wasnt something i was wanting overnight either

 

billet wheel 5557 with our manifold and accomodating parts. too much power for the car in my opinion. it wasent what i wnated

 

Finally............a sane individual.

 

i am not sane, and 450/450 sounds flippin awesome in a 2900lb car...haha

 

Sane is no fun.

 

The pwerks WR3 looks like a nice bolt on option for good top end power. For overall powerband, it's going to be hard to beat the ZFR 6758.

 

sanes fun lol.... people got to remember my back history with how the pwerks turbo kit came to happen. another car already started the prototyping and backed out and i jumped in to finish and thats why i ended up with the billet wheel setups originally. as soon as i got news about the efr i jumped on it. i had like one of the first 5 that were released to the public.

when i build a car its all about balance now. i like drivers that i can take to the race track. meaning any race track weather its a straight line or road corse. or a balance between street and road corse. ive found that 400whp is a perfect number in the cobalt and really is. i spent months with dave dialing the car in to get it where it was on pump gas. it had an amazing tune it and parts that really did their job. i dont just say this because iwork their because when my black car was done i wasent an employee. i was able to do whatever i want with the car and still take it anywhere i wanted. took it to tail of the dragon and it did great the whole way while still getting 31mpg on the highway.

 

Ill agree with you there, I'd like to make 400whp on my car, slowly acquiring parts now.

 

yep. my efr setup was beyond perfect and worked perfect. only mods to the engine i did AFTER the 5557 setup was valve springs. even then i only ran it to 6500.

 

so if I wanted to run 400 horse I wouldn't necessarily have to rebuild the head or block? And still
be safe cause I'm not trying to blow anything up lol

 

You really won't blow anything up unless tuned improperly.

Valve springs will definitely help benefit more power with a bigger turbo and that is considered head work. But it really isn't necessary.