I have a 2003 Evo 8. It doesnt have anything crazy on it, just the HKS intake, cat back exhaust and a Dynoflash mail in flash. I want to get a MBC and a Boost guage that measures PSI. I currently have the Mitsu guages and I don't read bar well enough to be exact.
My question is, how high can I set the boost without damaging the engine and/or turbo. I have read threads in here before that stock is 19 taper to 16, and that you can safely set it to 21 taper to 19. Is that true? Thanks for the help

 

I think 22psi max on pump gas