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      02-27-2013, 10:39 AM   #14
Chriskm3
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Drives: M3
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Quote:
Originally Posted by JAM3S View Post
Deleting the secondary cats wont make any engine lights come on so no worries on that.

Not sure theres much benefit in deleting the secondaries since they are smaller though.
Deleting secondaries and resonators alters the sound of the exhaust. More agresive sound. I just don't understand why go through all the labour to weld oem cats which are most restrictive and not upgrade to hfc and weld those bad boys instead. Doing that route would provide extra 20 hp easy
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