Quote:
Originally Posted by newbie340
I'm not worried about warranty. I want my car to last 150,000+ miles since I bought it new (not leased/purchased used), therefore I would like to "tune responsibly" you could say. E.g. maybe I could upgrade X part in addition to to the tune etc...
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As someone mentioned before the M3 has stronger engine internals to handle the power and make a reliable engine. I'm not sure what is available out there for the b58 and how much is required, tearing into the engine is a costly thing. The b58 is new, i doubt anyone really has the answer to how much power you can actually squeeze out of it reliably and for how long.