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Old 01-02-2013, 07:05 PM   #1272

ST1LE's Avatar
Drives: 2013 AGM 2SS/RS 1LE
Join Date: Oct 2012
Location: Houston
Posts: 1,254
Yes thats normal with a exhaust fuse pulled or the exhaust controller. I have heard ZL1 owners talk about it. Mine is the same, not quite that dirty though.
2013 AGM 2SS/RS 1LE w/NPP 1 7/8" Long Tube Headers with High Flow Cats, Intake w/scoop, dyno tune, and Apex 1.25" Lowering Springs.
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