Quote:
Originally Posted by 13blk335ix
thank you for finding that. but spark plugs are now ruled out. the stutter was there with the oem ones and still persists after ngks
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Clutch slipping.
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2013 F30 335i xDrive M-Sport 6MT (FBO/BM3 custom tune by HCP, 91 oct, 550i clutch, xDelete)
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