On a stock turbo on a 1gen gst, i knothe turboputs out aboutt 11psi of boost, But iwas wondering, If i went with higher boost andIf i upgraded the fuel pump and regulator, possibly injectors how many psi can i put on the stock engine with the same ECU, without haveing to do major tuning?
THanx, Zach

 

your stock turbo is only effecient up to about 15-16psi. after that you will start blowing hot air and detonating.

 

I know, i would be getting an aftermarket turbo to , i may have forgot to mention that

 

A7-18 MAX with fuel