Hi!

Assuming there is a upgraded fuel system, What are the boost limits that the EJ20 engine can support without changing the internals?. I guess the word "support" could have a lot of meaning regarding the style of driving, but I suppose the boost is used only the 10%(or less) of the time.

I have seen the tuners map the ECU's with 20 psi at the middle and 18 or 17 at the end, Is this a safe limit?

Regards from Chile