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      02-08-2013, 02:17 PM   #13
Incompatible
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Drives: 07 AW Z4C 3.0Si
Join Date: Aug 2007
Location: San Diego

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For those who are interested, here's the link to angry cop's thread: http://www.zpost.com/forums/showthread.php?t=687247
This exhaust mod is probably the best bang-for-the-buck and cleanest out there, however there is one potential and serious problem. Removal of the secondary cats, even though they have no sensors or connection to the ecu, is altering the car's pollution control system. In some states this is an automatic inspection fail regardless of whether or not the vehicle passes the tail pipe test.
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