[m2michael23]

Hey guys, My f30 is coming up to 33,000 miles. It's a 2013 f30 335i. I have jb4, intake and turbo back exhaust on it. Do you think the higher boost will expedite the life span of the plugs?

[floydarogers]

Originally Posted by m2michael23

Hey guys, My f30 is coming up to 33,000 miles. It's a 2013 f30 335i. I have jb4, intake and turbo back exhaust on it. Do you think the higher boost will expedite the life span of the plugs?

Plugs have been a 45K item on the turbo engines - although some dealerships seem to think they're the same 100K mile interval for the non-turbo engines.

Higher boost and harder usage is not likely to enhance/extend their lifetime.

Coils, while some production runs have been problematic, are lifetime items that should not need replacement unless a CEL and codes point to multiple mis-fires of that cylinder.