mine spikes at 20 holds 18, 17, 16, 15, 14, 13, 12, 10......
but that was with the old wanky pace!!
should be peaking at apporx 21 / 22 and holding 18 with the new much BIGGGGGGGGEEERRR intercooler!!
but i won't run more than 18psi...... (as i have nos)