Thread: More sound. Stay CA Smog Legal. HOW?
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      11-04-2019, 04:03 PM   #10
wrk.eat.drive.rpt
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Drives: 2016 340i, 08 e92 m3
Join Date: Aug 2017
Location: CA

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I'm in the OC. so relatively close. What if I removed the secondary cats, kept resonators and but left dinan mufflers as is?? Similar?

Also I would assume removing secondary cats would negatively affect smog test no?
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