7 replies to this topic

[pheasantshooting]

hi there, i,v heard of people de-catting there mini's. can any of you people shed some light on this as i havnt found this on the forum yet and im slightly confused. i have a 1993 italian job LE 1275cc. is this possible on this model and is it legal. but again as i sain before what is the benefit. hope someone out there can help me out.

[Ryang556]

You can de-cat it with a decat pipe, essentially you take out the cat and replace it for a pipe. Sportex and Maniflow make them to my knowledge, not sure if it'll past the MOT like it though, just put the cat back on every time the mot comes around

Edited by Ryang556, 27 October 2012 - 07:21 PM.

[minidaves]

as a carb car the cat is next to scrap anyway, but these days would keep it just in case the rules change

[spi-bwk]

minimal gains to be had from doing it and it could affect your running. Some say you get a deeper sound. I think its barely noticeable to be honest. Try it and see what you reckon. Its only 4 bolts and takes 10 mins to change.

[mini-luke]

You could just smash the guts out of it to keep it looking standard, seeing as you'll only have to pass a carb emission test.

[pheasantshooting]

beautiful, thanks for the quick replies, i might have a play about soon as im going to be changing my exhaust any way.

[Leekr89]

Due to the vehicle being used after 1st of august 1992 it qualifies for a 'catalyst' emissions test irrelivant if it has a carb or not, athough you can get round it if the engine has been changed for an older version but proof must be given to the tester. i have a 1994 spi cooper s and i have removed the cat, found it to be partially blocked with carbon so wouldnt of been good for performance but i know i will have to refit for the next mot, also try and check your ignition timing, i found on mine the distributer was way too far advanced, it used to backfire awfully when the engine was cold, adjusted now and runs fine :)

[racingenglishcars]

Unless your cat is clogged, removing or gutting it wont make any performance difference.