I have been doing some research in the achieves and haven't found something simple where can i see the max whp that a specific turbo can do.

Turbo Max WHP

T04s
Gt35r
T04z
Gt40
T78

I want to know what is the max whp(on a streeported engine with race gas) on each turbo. How much boost is needed? what is the psi where the turbo loses efficiency? What is the max psi that turbo could hold?

 

you'll get a million answers, but i'll give you some ranges for a streetported motor on race fuel at 'higher' boost levels

T04S low to mid 400s , compressor wheel holds this one back
GT35 mid to high 400s lots of different hotside options
T04Z mid 500s , search T04R, they are basically the same
GT40 mid to high 500s
T78 high 500s, maybe over 600 . lag is considered to be bad on this turbo.

 

you could always do the math and look at a compressor map. that will give u the exact answer.

 

Compressor Map? How do you do the math on this one? I didn't went to school the day the teacher explained this subject.

 

This should get you started.

https://www.rx7club.com/spec-tuning-154/how-size-matters-478915/

 

Yes, please read the whole posts by Sean, then you will be able to find all your answers.

 

i have a gt40r and broke 425 hp on pump gas @16psi