Thread: Dual Exhaust Cut-Outs on 550 F10
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      11-13-2011, 09:15 AM   #33
dmetuning
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Drives: 2015 Frozen Grey M5
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Originally Posted by tp550i View Post
sounds great

did eliminating backpressure set any codes at WOT?
I am guessing not since your mods are well downstream of the O2 sensor.
no...we are all good......
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