Not really...NGK pre gaps the plugs at 0.50 and says not to change it. On all of the forums I see on the PT Turbo. They reccomend it to be lowerd to 0.44. I did that without touching the center wire which is very fragile. I think that a plug or two was defective. I did get a code p3000 multiple cyclinder misfire. The wires I have on are the Magnacore 8.5 wires.