[Juiced1]

When you remove the rear cats this is always a possibility to pop up. It's the least important cel in all the cels. You can delete it and go on with your day or any tuner can make it go away.

[Chris C 1SS 1LE]

Originally Posted by Gonzo719

I have the M6 so didn’t think a tune was necessary doing a cat back I’ve seen lots of videos and read lots of posts with people removing the secondary cats with no issues went through and torqued everything can’t find any leaks like asrautox said maybe a bad primary cat

Tune isn't needed. If dealer installs new cat CEL will return. It's not the cat.

[Chris C 1SS 1LE]

Originally Posted by artey34

Had same code with AWE Catback. Need to put muffler paste on the joint connecting the PLP and Primary Cat Outlet. Once I did that, cleared the code, no more issue

Same product I posted pic of earlier in thread, sir?