Quote:
Originally Posted by RobZL1
Too much boost with an X port and 22% lower for factory plug heat range. Defintely don't run a set of 5 heat range NGKs. Run a set of Brisk rr12s and gap them a little tighter. Prepare to replace them every 15-20k km though. Boost eats plugs.
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EXACTLY what RobZL1 said!! Search my posts, and watch this video and skip ahead if you like as I get VERY descriptive as to WHY you want to use BRISK and nothing with Platinum, Iridium or Unobtanium in your LT4.
https://youtu.be/YNWLVMu1dqY?si=dtof4vLpAiA4Odsy&t=540