I just replaced my plugs with the stock NGK N20 plugs on my 228. I've had the BMS Stage 1 tune on my car for 18K miles. I'm currently at 67,077 miles. The photos are oriented left to right is from of the car to rear as far as cylinders go. When I first started it up I had some sputtering. I checked the coil connections and made sure that they were all seated correctly again. Started it again, no issues. That rear plug is a pain in the butt.
Thoughts?
Last edited by SteveInfante; 11-24-2017 at 10:12 PM..
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