I just wanted to add a note for the write up, to let the car run for a while after replacing plugs so the car can relearn its fuel map's other wise you'll get a check engine light with the cruse control light flashing at you and the car will want to stall after letting off the gass. Not really my tuner, as much as a friend who Does it. Kevin primus from salem ma. Prime speed performance, and has been afiliated with BPR Barry primus racing. They've gotten some covers on a few magazines before. He's done some interesting swaps with some 4 didgit out put numbers no nitrus.