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I haven't been following the engine stuff for a while now. Is this a comparison of an M2's N55, or another non m version?
I remember reading that the M2 had forged internals versus the non m versions of the n55. Is this still an accepted fact, or has it been debunked?
I even remember people saying that the n55 in the M2 was closed deck, which we know to be false.
Closed deck vs. open deck debates can go on all day long. We all know that the s55 can make more power more easily and more reliably, unless you have the hub issue.
We also know that the n55 in the M2 sounds nasty and is no slouch and the power department either. I personally know of a handful of people making over 500 whp easily. And I know of at least two are making over 700 WHP on their n55's. So at this point it really comes down to reliability.
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