WHOA i thought you wanted a small gain.

If you want 350 to 400 hp what boost do you want it at? high or lower(like you have now). I'll assume you mean 400hp on race day where you pump race gas and up the boost. Then a T3/T4 60 trim or 57 trim should do fine. will spool really well too. not like stock but not like a full T4. You will need bigger injectors with the ability to turn them up and down. And most likely a new manifold.


I have a turbo sized up for 400hp @13psi. The turbo is capable of 600 @ higher boost. If i told someone 400 hp is the goal they might suggest something where i had to run ungodly amounts of boost. So the boost level question is important.