Quote:
Originally Posted by slowblackx3f25
step colder plugs are for tuned BMW's/vehicles in general, right? please correct me if I am wrong...
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No you’re right. A plug you probably shouldn’t worry about unless you’re at least Full-Bolt-On. Even then I’m sure some N54/N55 wizards will say they’re unnecessary. All I can say is, I’ve ran Step2 colder plugs in both a N54 and N55 FBO setup and can’t report any negatives to performance.