Thread: Downpipe options that won't throw a CEL
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      10-11-2021, 09:04 AM   #3
TacticalGunnarM550
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Drives: 2018 M550i; 2017 430i
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Quote:
Originally Posted by Boosted_8 View Post
You can remove the secondary cat to get a bit more sound and performance without CEL. Primary cat is a bit more involved.
Was hoping for something like this
https://x-ph.com/stone-exhaust-bmw-b...0-340-440-540/
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