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      08-22-2019, 07:39 PM   #12
nsjames
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Drives: 08 328xi Touring
Join Date: May 2017
Location: ohio

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I'm assuming it's auto.

XHP will completely transform the car.
service up the transmission prior.

the transmission programming in these cars was pretty terrible. it's a good way to transform the car without really adding risk. You're just firming up the shifts, which is exactly how the factory programming went in the later years with a very similar transmission.
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