10-09-2012, 06:08 PM
mine also does this gets to around 20-21psi at around 4k but is at around 14psi at 3k but it smokes like a bitch in the lower revs i.e. 1200-2200 due to max fuelling and boost compensator (although 80% is probably boost compensator as its wound out to around 3 threads showing)