Quote:
Originally Posted by JohnEastvold
Yes, its what n54 and n55 guys run i believe. a local 700whp 335i runs them on an .18 gap.
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I would go this route and gap the plugs to oem specs. BMW has gotten very clever and electrically measures the spark plug gap to detect knocking, as well as misfires and bad combustion. BMW calls this "ion flow technology." Burning fuel causes ionization, and BMW measures ionization by measuring plug electrode resistance.