HIGH FLOW CATS?

[tomvcarter]

I am thinking of replacing my exhaust with a xpipe which would delete both cats and replace it with 1 set of High Flow cats and a resonator...
Are there any implication for legal use on the road if i were to do this? Does any one have any experience of doing the same with an M car?
THanks Tom

[Animal]

Will it pass emissions at MOT time? Will it cause an engine fault warning? Will it affect power/economy? Remap needed? You need to ask whoever you're buying from these questions (and enjoy the noise!)

[tomvcarter]

Animal said:

Will it pass emissions at MOT time? Will it cause an engine fault warning? Will it affect power/economy? Remap needed? You need to ask whoever you're buying from these questions (and enjoy the noise!)

Its from Active Autowerk who are based out in the US:

Not sure as US regs are differnt to UK regs, this is what im trying to find out...

No, built to avoid the fault wardning light.
Yes, increases power and sound.
No, no remap needed.

[Animal]

IIRC (and I'm probably wrong!),

100-cell CATS are quite marginal come MOT-time (as per my last car - Impreza WRX) but 200-cell CATS should be fine.

If in doubt, give the car a good, hard run before the MOT and find a friendly station!

[tomvcarter]

Yes they are 200 cell Cats.
Who would be able to tell me, any MOT garage?