Quote:
Originally Posted by thecooltype
sparkplug? Happened when i installed the tu hpfp and went bm3 stage 2+. I just assumed the tune giving more fuel to the engine leaves less gas in the exhaust to pop and bang but not sure
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ngk silzkgr8b8s (94201)
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BMW E39 - 520i
BMW E60 - 530i
BMW F31 - 328i
BMW G31 - 540i
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