Quote:
Originally Posted by m3gasm
I went 2 steps colder.. Since I have JB4 and Catless DP I was getting an engine malfunction at full boost. So i did the OEM equivalent replacement for the S55 (F80 M3) Plugs. No more Engine Malfunctions!
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Do you have the part # for these plugs? I just can't seem to find it. I also need 2 step colder plugs now, since I am tuned.