Thread: Fume smell E92 M3
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      04-30-2020, 03:03 PM   #3
timothy2001
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Drives: 2011 E92 M3 6MT ZCP. SOLD
Join Date: Oct 2014
Location: NE Florida

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I have never heard of the OEM or ACM exhaust mod causing an increased emissions light or set a code. I have the mod and never had an issue with it. It may just be a bad O2 sensor.
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