What's up guys. I've got a 13 GSR. Current mods are as follows:

Cosworth intake w/Cobb velocity stack
AMS widemouth DP
Cobb test pipe
straight piped
ETS FMIC 3"
Upper & lower IC pipping
Cobb 3PBC
Cobb Acessport on a custom dyno tune.

My numbers on 92 octane are 335/330. I am wondering with E85, 255lph pump, 1000cc injectors, and a AMS fuel rail. How high you think I can rub the car power wise without risking of blowing anything. Any advice would be great. I'm on a track to get an EF2 turbo as well (I don't want a crazy set up as it is my daily) 450 is my goal. Also should I change out my top or bottom end with the e85 or the new turbo? Sure it would be safer for the turbo swap, but is it really needed? Thanks guys.

 

with e85 youll be around be around 400whp, plus or minus a few. with the turbo you will be around 450whp, also it is not needed to build your bottom end or anything AS LONG as you keep the torque down when getting tuned, horsepower doesnt break ****, torque does.

 

Thanks. I hear it from everyone it's the torque that blows up the Xs. What's a safe number for TQ? 380?

 

I would say 380 is probably the highest i would personally go, without building anything

 

I dont think you need the fuel rail for the stock turbo. Its rare to see over 380hp on e85 with stock turbo, mustang dyno, but every dyno is different.