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      11-22-2021, 01:54 PM   #7
Dawgz
F97 X3MC
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Drives: 2020 X3MC
Join Date: Feb 2019
Location: USA

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Quote:
Originally Posted by TTV8M View Post
definitely do the downpipes only if your state doesn't require emissions inspection or rock out without a sticker (or buy one).

i found o2 extenders with mini cats on it from fabspeed.com (very exciting)
https://www.fabspeed.com/fabspeed-un...nverters-pair/

ill probably get DP, these o2 extenders and their exhaust system once im closer to re-assembling the engine in a few months.


Let me know how those fab ones work ..I've tried everything else even electronic ones and they didn't work.
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