Thread: I gutted my cat
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      05-19-2019, 04:11 PM   #18
Zanity
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Drives: 428i
Join Date: Oct 2018
Location: BC, Canada

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so 4 hours of struggle later, I mounted the downpipe back and plugged the O2 sensors in, I started the car leaving everything else off to check for exhaust leaks and the CEL, theres no CEL! I rev a bit and checked the v band clamp, no exhaust leak! rear exhaust tips are blasting, so it looks like theres no leak anywhere! Time to put everything else back together

Funny thing is with gutted cat the BOV sounds louder like an after market one, the woosh sound is great, engine sound stay the same.
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