[dean]

Originally posted by air-cool-me


what kind of PSI can i run safely with 7.5-1 and 8-1 with 91 octane and 110 respectively on a 3L CIS motor with a decent intercooler?

thanks for your help

-nick

I think it depends on your CIS system. Some run leaner than others. I have read that a lot of people are running 8 to 1 at 1 bar pressure with 93 octane. But that is with EFI. I think most of them do turn down the boost to .8 bar most of the time.

Sorry not very helpful

Dean