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      06-26-2012, 09:02 PM   #22
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Drives: 2008 M3 E92
Join Date: Apr 2012
Location: Bay Area

Posts: 185
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Originally Posted by ftconstruct View Post
I installed the Challenge axle back about a week ago. It sounds incredible in my opinion. I am coming from an Eisenmann Sport paired with the Challenge Street x-pipe. I am running the stock x-pipe pipe with the new Challenge exhaust and I think it would be too loud for my taste with an aftermarket x-pipe. I will post a full review soon. Very happy so far.
Can't wait for the review! Hopefully you can describe how it sounds from inside the car too!
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