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Getting rid of the cat saves weight, reduces heat, and improves flow.
I have the M&K pre muffler in place of the cat w/ the stock muffler. Yes, the smell ain't great but prefer the pre muffler to the pipe due to the reduced crackle/chirp in the exhaust tone with the stock muffler.
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2018 X5
86 911 Targa 3.2
80 Mercedes 450SL
2006 530xi BillyBoat/H&R's....gone
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