Quote:
Originally Posted by SunDevil_M3
I think with proper maintenance and care the N54 can be as reliable as any other M motor. I think the N54 gets a bad rap from the cheap group with the 335's.
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On the flip side it's so easy to mod since it has forged internals, but there are highly suspected failure parts(ex. e9x throttle actuators will go at some point). 10-15k mile carbon cleaning is a pain. They did extend the warranty on the HPFP to 10 years. Waste gate rattles, vanos, leaky injectors are some things you can't control.