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      07-03-2020, 11:12 PM   #9
MLIFEM550
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Drives: BMW M550XI
Join Date: May 2020
Location: CHICAGO

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When spending 80k on a car butchering it by cutting the res in my opinion is crazy. Spend additional 1.5 - 2k and get a axle back exhaust. Also I did talk to my SA and he said removing res can sometimes impact the performance of your catalytic converter. So that sometimes can trigger a CEL or a code in your system because there are back pressure changes.
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