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View Full Version : anyone ever gutted the cat converter?

wobby82
23rd August 2011, 17:45
just wondering your experience if you had? thanks
logic_guy
23rd August 2011, 18:21
Yes

The only way to describe it was that it looked like a Honey Comb

I used a Mahoosive, thick long ratchet to batter it out. It was worn out and started to rattle. On my Punto.

My experience: Louder exhaust sound then on standard exhaust system. Seemed a bit better on acceleration. Failed its M.O.T. But when you got a mate that will pass you, its fine. Stunk of petrol when in traffic or on a cold day/ cold start up.

Sometimes it made a noise that gurgled and splutter when you reved the engine.

Why do you want to do it to yours?
Tontsy
23rd August 2011, 19:05
manifold cat or under car cat?

ive done a few mani cats, and had to melt them out, as they just wouldnt bash out !
bastards!
Gandi699
23rd August 2011, 19:11
My vtr is decatted with a supersprint decat but the cat I had was crazy - you can see right through it!
Cam
23rd August 2011, 19:11
i did it already on my mk 2 vtr cat under mani, it was like what the radiator is made of! sounds awsome.... would a 421 sound even better

if you get a manifold get a 4-1.
Saxotim
23rd August 2011, 19:46
wondered why my vtr failed mot....

http://i29.photobucket.com/albums/c262/deany_/Image187-2.jpg
Cam
23rd August 2011, 19:49
wondered why my vtr failed mot....

http://i29.photobucket.com/albums/c262/deany_/Image187-2.jpg

You love it! :panic:
ashrichards
23rd August 2011, 20:02
yea ive done one but it sounded really odd with no internals in the cat really raspy
williamsvts
24th August 2011, 18:34
why would you wnat to do that? just weigh them in and buy a decat.
blackhawkpilot107
24th August 2011, 19:04
Did you guys get any codes on the ECU when you removed the cat?

On my Subaru WRX when I removed the cat I got all kinds of error codes from the ECU because of oxygen sensors. I actually ended up installing an aftermarket ECU that had a cat elimination option lol
wobby82
24th August 2011, 19:14
no mate
wobby82
27th August 2011, 07:02
was short on funds at the time
LeeM
27th August 2011, 13:00
did it on my mates gti-6, he reckoned it lost a fair bit of torque low down
logic_guy
27th August 2011, 13:33
No ECU lights on my car.. The mani was UNDER the car, no where near the lamba sensors.
ryanmt
27th August 2011, 14:44
I have, made a rather fierce potato cannon

http://cabletiemotorsport.com/gallery/gallery/images/Misc/IMAGE_00118.jpg
kane_15023
29th August 2011, 19:38
when i bought my williams clio this had been done and it sounded awful. so i got if off and put stainess straight through pipe on!!!
blackie_2k5
29th August 2011, 20:05
I have, made a rather fierce potato cannon

http://cabletiemotorsport.com/gallery/gallery/images/Misc/IMAGE_00118.jpg

FLOL ryan...