What's really main performance difference in the S63 compared to the N63? Is it just the larger better turbos? Or is there something else? Again just strictly speaking power increase. Not like more durable parts in the engine bay. Obviously that goes without saying in an M. At least it better for that price difference.
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'07 Yamaha R1 (sold)
'06 C55 AMG (sold)
‘?20 M5, MP Carbon Pro Spoiler, MP Carbon Diffuser, MP Black grille and gills, MP Carbon Mirrors, CF side sills, 789M w/ Ti studs, eventuri, Dinan X pipe
'14 X5 50i (wife’s now)
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