De-catting

[camroc]

hey all, just wondering if anyone can help me, love the sound of my mini but id love it even more if it backfired so I was thinking of removing the cat, and put it back on for nct and all that, anyone got any advice or know how to do it, I have a millennium twin DTM exhaust

[drifthooligon]

I presume its a removable cat yea ? I had the same idea and being 1989 it doesnt need to pass in emissions so it'd be no problem in that way so is it as simple as making a straight through pipe the same diameter as the system and making brackets to suite or would there be more to it ?

[kerryminigringo]

Maniflow do a de-cat pipe.
http://www.somerfordmini.co.uk/eshop/in ... s_id=13931

[drifthooligon]

Not too bad, if I wanted to could I cut the brackets off of the cat on the exhaust and get some stainless tubing and weld them on ?

[camroc]

cheers lads, and is that just a bolt in piece or do I need other parts?

[drifthooligon]

Gaskets or gasket sealer would be handy

[camroc]

ah yeah, but I can get them in the motor factors

[drifthooligon]

Well then your sorted another barbarian method if you had a spare cat would be to get a crow bar and break up the filters in the cat but then that would just act as a slight resonator compared to a straight pipe and if your considering making your own maybe you could reduce the diameter of the pipe to add a slight rasp to the sound

[joeyfinneran]

Sorry to hijack thread but its on topic

Can a shallow cat be got ?
Any time im on a ruff road thats all that catchs unless its a stupid road when the sump guard hits the grass in the middle

I know a de-cat pipe would solve it all but effort of having to change it once a year

[drifthooligon]

You could fit a striaght through decat and fit a butterfly valve aswell and run a cable into the cabin and pull it to close the valve for the nct

[Dylan8660]

A y piece to cat pipe of an lcb can be twisted to raise the cat out of the way and snug in the tunnel.