Quote:
Originally Posted by ForeignMuscle
That's good power for the CA, but I wouldn't say the turbo is maxed out.
An sr engine has more displacement. I could use 12.5mm cams and I feel like I could push more than 24psi out of the gtx, but I could be wrong. Surely the thing is good for 450whp at least. If Codyace made 400whp with a 2871 and pump gas then I should be able to see close to 475whp with e85, 5 more psi, and the advanced timing that ethanol allows. No proof without puddin though.
I may just keep my big top mount setup and make 500whp with ease.  |
The turbo is advertised as a "max 475HP" .
Check its flowmap:
I think it will overspin and still be out of puff at 30psi on an SR20. It will have awesome spool time though, seeing how reactive it is on that CA... basically, it has gt2871r/gt3071r power potential, with faster spool.
the problem is not knock, which e85 allows to get rid of, but the turbo ability to produce flow at 30psi. If it is out of puff at 25psi on a 1.8L @ 8000rpm, i really dont believe it will produce enough flow to get 30psi on a 2L (even at 7000rpm). I would not use that turbo if your power goal is 500HP (unless you dont care how long it lasts and you just need fast spool).