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Old 09-30-2012, 06:52 AM
paul mertens paul mertens is offline
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Location: east islip ny
Join Date: Jun 2012
Posts: 8
Mein Auto: 2006 bmw m6
my m6 came w/ 4 cats. The front 2 ,one on each side, have the O2 sensors on them but the second set does not so I cut out the secondary cats. I also removed the resonator .and noticed there is a cross-over between sides . No x-pipe needed. I have been told by many,including BMW enthusiasts, that it sounds like a formula 1 car from behind @ 7.5k on the tac. Fortunately or not I haven"t heard it from the back of the car. Only once my wonderful wife had 2 use the car and she didn't realize she was in 1st! lmao!!!!
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