BMS has a new tune/hardware platform coming out for the N55 so their N54 tunes are not compatible. The intakes are also not compatible as the N55 has a whole new airbox, MAF, etc, to contend with. Early testing on a new intake resulted in poor results so the primary focus is on tuning now. And the car has responded very well to tuning. Not as well as an N54 but huge improvements over stock.
Mike
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