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If anyone here has any experience or background w a tuned N54 you will quickly recall that this engine does not need to rev any higher than 5800. lol
An N54 protuned on e85 making 430 whp (aka the car in my sig) would scare almost everyone here. Sadly, I do not believe the s55 turbos have that much headroom.
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2 x N54 -> 1 x N55 -> 1 x S55-> 1 x B58
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