P0420, P0430 Codes

[21STBlkout]

So my CEL just popped, ran the scan and its coming up with the codes above, did some quick research and coming back with possible cat issues I have CV high flow cats installed with the defoulers. I installed them months ago and did not get any codes so I'm assuming bad 02s? I haven't had it in the air yet to see if they are cracked (I know some CVs were made defective) just thought id post to see if anyone had any similar issues or anything to point me in the right direction. Hoping its just the 02s, I'm going to bring it to my garage to have them take a look as well.

Side note I did just replace the purge valve last weekend but I doubt that has anything to do with it.

 

[21STBlkout]

Wanted to give an update, still have not found the issue since my last post my CEL just popped yesterday, same 2 codes (I cleared the codes the 1st time) Im leaning to the 02s being bad or the defoulers are not working now?? Im not sure. Still havent had the time to get it up in the air to check the CVs.

 

[21STBlkout]

Update: With some info from Nick @ Performance SUV he pointed me in the right direction to talk to Jason Anderson from CVfab and in explaining my situation he is sending me the J-style de-foulers with the different orfices (which will come with future orders of the downpipes) to hopefully fix the issue I am having. Allthough he is kind of confused why its happening 5k miles after install. Ill post results after I install the new de-foulers.