Quote:
Originally Posted by 1268
My guess is straight line performance can potentially be achieved via a tune. All around handling/ride etc performance would not be the same due to m differential and tuning of the suspension etc.
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I think the Racechip will only bring HP on an Xdrive50i to around 500HP which is close but still less than stock M50i HP levels. It will definitely be noticeable over stock xDrive 50i performance