supposed to be 30 psi... if i have no joy sorting it myself ill have t just pay to have it looked at.. just didnt want to pay out only to be told that it cannot be sorted out or that i have to go away again to buy more parts as i would rather do that first then have it looked at... also the 500 mile round trip to a tunner puts me off a bit as i already do 1k ish driving a week..