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Old 01-08-2013, 09:16 PM   #2
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Join Date: Apr 2005
Location: Newark, CA
Posts: 3,005
My Ride: e46 325XI, e36 M3
Are r u running rich? If u have headers than the oem cats are gone so both situations can explain it

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Last edited by bmwstephen; 01-08-2013 at 09:18 PM.
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