i was just wondering how much boost the stock turbo on a 05 evo VII will handle wothout damaging turbo....

 

without some other mods it will handle far more than your fuel system will be able to keep up with.

Most are dialing them in around 22-23psi, but I find that a bit high for stock fuel pump.

 

well with higher octane ive gotten it up to 25 easily and make a ton of diffrence and all i got is a intake by injen..no tune or nothin

 

Yes you can get it up higher, but when I say your fuel system may not keep up I mean you may be running leaner than you would like.

I bring this up because I run a tune and have recently done some logging and have found that my fuel system can only keep me at the AFRs I want it at if I run 19psi or lower. So I am putting in a new fuel pump. But even if you can run the AFR you want at 25 PSI its not recomended on the stock system.

 

I suggest doing a search as this topic has been covered numerous times and the info is at your finger tips.

BTW...25psi is not something that is recommended, even with a tune. You will find you are blowing nothing but hot air increasing your chance for detonation.

 

I run 25-26 psi on my car. I have a stock pump. No problems, but i also have a custom flash from Works

 

have you ever logged your AFRs?