I was running about 15+/- avg psi with the jwt ecu, and now only a more stable 16 psi with the profec. The 555s & ash ecu ate my clutch alive! The 3rd gear engagement and up is gone when boost sets in. I take this upgrade with a grain of salt due to the "now" required clutch upgrade! As far as Marino.... He sells cars now, like Hank Aaron!