stair

I have a 2004 WRX with H&S exhaust including their 100 cell sports cat + remap, unfortunately this configuration has never passed the MOT even when well warmed so necessitating a long trip to visit someone helpful. Admittedly the failure is by a knat's but it is still a failure.

This arrangement is becoming a royal PITA so it is time to bite the bullet and fit a new CAT. The question is what replacement CAT does anyone recommend that will get me through the MOT without compromising performance too much

Thanks

Stair

scooby_Paul

cobra 200cell sports cat will pass MOT.. Think there £265 on exhausts uk site

SirFozzalot

The Prodrive one should pass an MOT if you can find one. They come up for sale quite regularly.

TH9564

iTrader: (2)

Have you thought of terraclean, cleans your engine up, helps with emissions, eds China did it on a jag xk8 with impressive results! I think it's usually around £85

DarrenSTI

iTrader: (3)

Prodrive cat will pass, I have one fitted, never had an issue come mot time.

I read some cats need to be warm to pass, but never heard of one not passing, especially a h&s model.....could you call h&s see if they can help?

joey_turbo

iTrader: (26)

It is a downpipe de-cat? As mentioned, it should pass.

stonejedi

iTrader: (51)

Prodrive.

EOEUMC

iTrader: (5)

Isn't the idea of a sports cat is that it will still pass the mot (as already mentioned)?
Maybe check your paperwork or H&S website for more info, as if it's faulty surely they should replace it if it states that they will pass the dreaded mot emissions

Norman Dog

iTrader: (1)

+1
Never had any issues when I had one on my WRX.

stonejedi

iTrader: (51)

With most performance cats you really have to get some heat through them before they start dealing with the C.O emissions before the actual test.everytime I use to go for my MOT the tester use to tell me to take my car up the road for a little burn and when I came back he would just put the test pipe in and it passed every time.

Athame1

iTrader: (2)

+1
It's what I have. Never had a fail, on car since 2005