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      10-26-2020, 10:09 AM   #7
GreenF30N26
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Drives: F30 328ix N26
Join Date: Mar 2019
Location: canada

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Quote:
Originally Posted by Ahmaddoski View Post
Can i just remove the secondary cat? Will it negatively affect the engine and performance In any way ?
Yes, you can just delete it. Make sure to use a mandrel oval pipe and then oval to round pipe as pictured. If you just use a cheap bent pipe you will restrict the exhaust airflow.

I noticed a significant difference deleting the secondary cat on my N26 with original muffler versus changing the downpipe from stock to ER catted 200 cell downpipe.
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Last edited by GreenF30N26; 10-26-2020 at 10:19 AM..
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