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      02-15-2013, 01:50 AM   #5

Drives: X1 x28i; 128i; S2000
Join Date: Jul 2010
Location: Orange County, CA

Posts: 672
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Originally Posted by paradoxical3
There is a possibility that the 1 series performance exhaust fits. Real OEM shows that they have 99% the same part numbers. No one has been able to confirm this however.
There is no N20 for the 1-series and the N55 exhausts from the 1 and 3 series don't fit the X1 or X3.

99% seems to be a stretch.