Thread: Evolution Racewerks 640 Downpipes On Sale 10% OFF + Free Shipping
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      12-22-2021, 10:28 AM   #159
city1991
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Drives: 2015 535i x drive F10
Join Date: Mar 2014
Location: Iowa

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Originally Posted by mike@x-ph.com View Post
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On a 2016 640i xdrive coupe with the Dinan stage 1, is catted or catless better for gains? I've read catless can cause you to smell fuel while catted doesn't.. however I want it to breathe better.
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