Originally Posted by outlaws69

Dude! The same thing happened to me when I bought my car. hook up the boost gauge and the car was reading 25psi with nothing else done to the car at all. Checked everything, still reading 25psi. While Dynoflash tune my car, with all Al's computers hook up, it was reading the same thing 25psi stock. Installed a MBC during the tune, my car is now boosting 30psi taping 28psi with a TBE and cams. Sometimes my car boost so hard my Defi gauges blank out, it happens. Maybe you got a strong EVO like I did.

Originally Posted by nj1266

Turn your MBC down. Your boosting too high. That is too high to run on pump gas. The Dynoflash removed your fuel/boost cut and now, for some reason, you are at 28 psi. IMO, you should not boost above 22-23 psi on pump gas. Save your engine. It is not worth it to run that high boost.