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      02-12-2018, 12:02 AM   #6
03yllwcobra
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Drives: 2014 BMW M5 CP
Join Date: Jun 2017
Location: Greenville, SC

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I bought the non-catted version and had to take a step drill bit to the oxygen sensor hole on the heat shield to get it to line up correctly but other than that they've been great.
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