Cat

[irishjohnny]

hey guys just wondering can anyone tell me would it damage my car if i was to punch out mycatalitic converter coz jus got told that mine might be blocked any help would be much appreciated cheers

[tridentt150v]

no, but you'll backfire all the time and then get nabbed by the porkies

[NA_Goodness]

If you dont backfire now, you wont back fire without a cat, but you will lose flow if you dont weld a pipe in the middle of it. If you do back fire now, you're likely to pop flames out the back.

[hojak]

you're likely to pop flames out the back.

SIIIIIIK MATE!!! haha. as for op, go ahead and de-cat, all will be sweet cept the odd flame pop, as na goodness mentioned, and ur emissions...which isn't really a problem untill u get nabbed.

[sh@un]

^ and then it's a huuuge problem, fine wise

[GeeTR]

Smashing the honeycomb out, as a topic has been done to death, please look around.

Pull your cat out, if its caved in, smash it out as a testing process. If it fix's the issue yourself and your mechanic are getting, then replace it with a larger unit.

Yes - having no cat will improve top end, yes - it will bring in boost in harder and earlier, yes- you'll get yellow stains on your paint and blow flame if your car pops and farts, and yes it 'could' get you a $20k fine (though iv never heard of anyone actually getting it )

Edited May 31, 2008 by GeeTR

[cowie165]

and after you hollow out the cat, make sure you take the "www.skylinesaustralia.com" sticker off your car