Stebbo

Hi, so I’m trying to fit a new jcr centre exhaust, and after looking at all the posts and vids it looks easy. I have however came across an issue.

The cats on my car seem to held on by a bracket in the pic, which I can’t reach to undo. This stops the cat from being rotated (as all the vids show) thus stopping me removing the Center.



Any way to get to this without removing the bumper ? (Don’t have the tools to remove the Center lock)

​​​​​​​car is a uk spec c4 gts 2021

Stebbo

Ok got the bumper off and it’s not a bracket.

what are these?

New cat dosnt have holes in for these.

Master Deep

You are in Europe, so the cats have the OPF sensors on them. In the US we don’t have those.

Stebbo

Now that’s an oversight, guess the cats are going back

Master Deep

I borrowed Europipe’s pics, but this gives you an idea. The plain Sport Cats have no OPF monitor for US cars. The pic of the cats on the full system show the OPF sensors.

Stebbo

I messaged @JCR-Porsche I’m good to disconnect them, and plug in the ODB dongle that should take off the CEL. That is tomorrows job

Stebbo

cheers for the help 👍🏻

FunnyBoy

On the European cars, the KAT has mainly 4 holes because of the OPF:
- 1 is for the oxygen sensors
- 1 for pressure before OPF
- 1 for pressure after OPF
- 1 for temperature of exhaust gas

hope this help.