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      06-12-2021, 05:24 PM   #4
David92
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Drives: Bmw m4
Join Date: Mar 2019
Location: New jersey

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Quote:
Originally Posted by madmedman View Post
Quote:
Originally Posted by PLife View Post
Im a doctor too i would have no problem running air filters and secondary cat delete (unmonitored they just chop out that short section). Start there and i would bet you wont need more. After that it starts to get crazy town.
Edit. Just noticed you have opf too, i dont know how much quieter yours are you may meed to also take out some resonators under the car out.
Thanks. Good to see a fellow doc here. I am in the uk so we get the damn opf. I will ask the exhaust guy to see what he can do with the resonators.

Would removing the secondary cats cause noticeable smell?
I removed the secondary cats… no noticeable smell.. remember you still have stock downpipes.
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