that is a lot of oil. my oldest sube is near 200psi and does not do this. Check base heat, (oil temp guage?) along with pcv check. The EGR valve is always a lunatic even when correct. Turbo will never notice it as much as n/a. There is a common delete, and maine allows it. N/A needs precise with the pcv, EGR is a bad think. Especially on fast burning fuel getting thumped with n/a pressure. PCV is common check, but EGR is a suby trait of lunacy going back almost 30 years. Boxers do not need it and never will...it is an attempt with world or cally standards. Maine don't need it. Seriously...and admire the fuel mileage if you go with a delete, it used to double the oldest subes. I am curious if dealers do it themselves. (Some did and do)