Akra slip on what xpipe = pass smog and no CEL??
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06-26-2011, 09:56 PM
BMW CCA Boston Chapter - Member
Drives: 2011 E90 M3, ZCP
Join Date: Apr 2007
I have the Akra Slip-on and the Challenge "Street" X-pipe on my 2011 E90 M3. No issues with ECU errors and no need for the Akra CEL Delete-R.
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