![]() Turbo on 91-93: BKR8EIX iridiums for the best for performance. 032Ībove 500whp you can run the Denso race plugs we offer. No NGK or other brands as they cause misfires and do not run correctly. LNF / LHU (2008-2010 Cobalt SS-TC / 2008-2010 HHR SS / Sky Redline / Solstice GXP):ĪCDelco OEM GM plugs ONLY. Turbo/Highly modified: Autolite 103 or TR6/TR6IX. Clearly there are people that want to make a small investment to better the health of their vehicle and not have to worry about having to possibly buy twice.L67/元2 SC: Stock or lightly modified, TR55/TR55IX, TR6/TR6IX, Autolite 103/104 gapped at. ![]() However if you don't want to risk it you can pay us for our time, and get a plug that is guaranteed to perform as it should. So, you can absolutely gap your own plugs and I tell people that all the time. Boost was actually lower, and timing/fuel was the same. The car went from 294whp to 323whp without even changing the tune. He grabbed a set of plugs from us and installed. I asked what plugs were in it and he said stock. The power numbers were off, but the car was running smooth and pulling fine. Not to long ago I was doing live remote dyno tuning for a shop in Ohio. People don't understand the importance of having a properly gapped, quality plug in these cars. If the plug starts igniting anywhere BUT the channel in the ground electrode you get weak spark and can cause spark blowout. The channel on the bottom side of the ground electrode is raw - no plating, so when you create more raw spots on the ground electrode you are making it hard for the plug to generate a straight spark between the gap. When you opened it back up to re-gap you marred the metal and removed some of the plating. Which won't cause a dead plug but will cause inconsistent spark as it will be igniting off the side of the ground electrode. If you make the gap too tight and you have to open it back up you mar the ground electrode with pliers. If you knock it off you have a dead plug. " T he damage is actually from gapping, most customers knock the iridium welded tip off because it is extremely brittle and soft. Get plugs that arrive at your door ready to be installed, no messing around. ![]() Skip the headache of gapping your own plugs without the proper tools, and avoid the risk of having to toss your plugs in the bin and wasting $30+. This process happens over the course of 48 hours and all plugs are triple checked before shipping. We have a proprietary process that allows us to gap the plug without any added fatigue to the strap, without damaging the Iridium welded tip, and the plug retains this gap even after being heat cycled. However we do not use the traditional gap method. 008" in either direction when using the traditional gap method. This is too large of a gap for any Ecoboost or Coyote engine and will cause breaking up under full throttle, rough idle, and misfire codes. Out of the box the NGK 6510 Plugs come gapped at. REPLACE EVERY 12-15,000 MILES FOR BEST PERFORMANCE!
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