- 22 September 2022
Wow that's great news .I JUST passed emissions with my car. I haven’t had the codes return yet. As well as two other cars that have had the same issue as well. Since I put extenders on 2 other NC1’s and my own. So far so good. During the same conditions when the cars would’ve normally set the P0420 and/or P0430 codes have not happened since the installs dating from back to November 2022. I’m just giving my personal experience with the extenders so far.