Thread: catless downpipe
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      03-26-2023, 05:04 PM   #3
Matthew_Maz
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Drives: BMW X3
Join Date: Apr 2021
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Quote:
Originally Posted by mike@x-ph.com View Post
it's probably a damaged or dirty oxygen sensor from the downpipe install.
Do you think a tune can fix it? Or maybe if I add a spacer on 02 sensor?
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