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Which Sparkplugs? N55 (mods)
Hopefully someone can chime in on this.... I've seen posts where everyone says something different...
I have a 12 335i
Mods:
Jb4
Catless DP
BMS INTAKE
resonator delete (if that makes any difference)
I'm gonna change my plugs in the summer and wanted recommendations... I've heard of people say go 1-step colder or something and I have no idea what that means :O
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