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i would rather run a high revving N/A (E92 M )S65 or (E46 M)S55 engine on a track all day over a tuned 335i.
IMO your going to have less problems with a well made N/A engine in terms of track use. but those tuned 335 are fun as hell on the streets.
Then there the other side, M cars cost more money to repair and mod.
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