Quote:
Originally Posted by Dinan_Engineering
Would work on both the xDrive and RWD. Test 7 series was a RWD variant and the M550i (same kit) was an xDrive so the numbers due to drivetrain losses are a bit different. Just an attempt at reflecting both.
The exhaust on the vehicle will add a bit of top end HP but nothing terribly meaningful. For all intents and purposes the exhaust is a sound only modification.
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Ok thanks. One more stupid question: is the hp/trq increase in all drive modes (comfort, sport, eco) or just one or two of the three?