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if you can harness the power of valvetronic... the n55 is gonna be better than n54 right off the bat... think of the tuning possibilities with control of variable valve lift...
bmw already got the n55 to have a lower peak tq despite moving to a single turbo. only valvetronic could have done that. who knows how tuner friendly it will be but if it turns out to be pretty easy, oh boy....
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