Quote:
Originally Posted by XSixxx
Agree. Essentially, you can get a tune from BMW from the start or a 3rd party, later. Either way, max HP should be the same. 95% (or more) or the wo engines are identical.
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Also, keep in mind that with a Carbahn tune on the M50i, you make SIGNIFICANTLY more power and more importantly a lot more toruqe than an X5MC and still have the warranty without having to hide it from BMW for $2,500.