Secondary CAT delete and emissions
Thread Starter
Junior Member
Joined: May 2020
Posts: 47
Likes: 14
2018 GTR
Secondary CAT delete and emissions
2017 C63 with APE
Did a lot of reading that many do this mod, which I plan to do shortly. I know these are downstream of O2 sensors so doesn’t impact engine parameters /error codes etc but does this have an impact on passing emissions?? I’m in AZ BTW
Did a lot of reading that many do this mod, which I plan to do shortly. I know these are downstream of O2 sensors so doesn’t impact engine parameters /error codes etc but does this have an impact on passing emissions?? I’m in AZ BTW
