i guess you could run a apc system from a junkyard saab like the volvo turbo guys, it's a knock sensor controled airbleed for the wastegate (if i remember right) i think it's a stand alone system, it's been a while since i hopped up a turbo volvo (i shouldn't of sold my 5 speed wagon )

Quote Originally Posted by George M
the least you can do is run a knock sensor to prevent melt down, low boost or not if you get less octane than you bargained for