MR2Mk1

iTrader: (1)

My Impreza is the UK MY00 turbo wagon with 2 cats one in the down pipe and the other in centre pipe would it still pass MOT if I put a De-cat front pipe on leaving the centre CAT?

I was originally thinking of going the Sports CAT route then having a de-cat centre pipe but sounds like sports CAT down pipes have limited life and more expensive than De-CAT up pipes.

Has anyone else done this and does it still pass MOT’s?

Bristol98

Its a resonator in the centre section (assuming classic) so removing the downpipe cat would effectively decat the system!

MR2Mk1

iTrader: (1)

I thought that originally but aparently the UK 2000 is fitted with 2 CAT's not just the one on up pipe.

http://www.iwoc.co.uk/impspec2.html

RuskiWRX

My 52 plate bug just failed on emissions for the second time. I've just got one cat in the centre and it has a de-cat from the turbo! Its just failed on co being to high! I only have a tiny little cat as the garage(cowboys) i bought it from welded it into the de-cat pipe. And it hasn't lasted so i need a bigger cat to get it through. Put it in and see how it goes. Good luck

MR2Mk1

iTrader: (1)

Chatting to others sounds like it's not worth doing if it's the only Mod I’m doing since all it will do is increase exhaust noise and give very little improvement.