Anyone know if I remove the catalytic converter from my 2005 TD5 Disco if it'll make any difference? I assume the engine will be able to breath easier, and Rimmers list 2 downpipes, 1 with cat, 1 without. I also presume the MOT smoke test is essentially that, a smoke test with a probe up the tail pipe, and no check for what the cat should have removed, unlike a petrol MOT test?
Alan C