Quote:
Originally Posted by pezho405
Will hollowing out the cats do anything for the power? since it is a non turbo. will it make it run like shit.
Also another question, on the X5/6 ///M forum they hollow out cats, but they are turbod. But wont this have any downsides? like wont the o2 sensors and stuff throw off stuff?
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Power wise it won't do anything just make your exhaust louder and you would smell the exhaust a lot more and you will most likely get a check engine light