DIY installing N55 mid pipes on a N54...
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02-07-2013, 03:33 PM
Drives: 2009 135i
Join Date: Nov 2007
Thanks for the writeup, Dack! I think I may go this route for midpipes to finish my exhaust.
2009 BMW 135i 6MT Sport, AFE intake, Cobb AP, Apex 18x8.5+9.5, 255/275 PSS
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