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      05-08-2020, 11:28 PM   #4
Scrippy
Lord Scrip
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Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca

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Quote:
Originally Posted by roastbeef View Post
https://afepower.com/afe-power-49-36...ith-resonators

that is what i have and it features a 300 cel primary catalyst. oem is 400 cel. it does not have secondary cats. the two sets of catalysts work together, so if you're environmentally conscious, i'm not sure just the 300 cel cats are going to ease your guilt.
my car stinks a little bit, but i don't get a check engine light.
Would you pass smog with this Beef?
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