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Punching Out The Cat


hanra

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  • Member For: 18y 4m 28d
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  • Location: Melbourne, VIC
just get a walbro - $125 if that off ebay...

Mate I've been looking for a while and I cant find one that cheap... Im scared of buying a copy..... Can you post a link or something... that's bloody cheap!!

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  • Member For: 17y 10m 30d
  • Location: NSW

Big fine for you & a big fine for the exhaust shop, I think the one for the own is about $10,000 not worth the horsepower !

Edited by jbute
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  • Into the laaaake
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  • Member For: 17y 7m 4d
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  • Location: Nrth Qld

It wouldnt be a shop doing it. How are the EPA ever going to catch you? Id love to see how much nasty stuff my mini choofs out....and theres not a thing they can do about that! Its not my fault they stopped selling leaded.

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  • Mad Scientist
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  • Member For: 20y 1m 20d
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Yeah but isnt it a mission to pull the tub out of the utes to fit the pump and surge tank?

yep or you can drop the diff and the tank out from underneath.

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  • Member For: 17y 9m 5d
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  • Location: Caracciola Karussell
I'd imagine you couldnt go to an exhaust place and ask them to punch it out for you???

MOST places wont (even for cash) but if u look around hard enough you'll find several places who do. DEFINITELY DONT ring them up and ask. They'll say no.. If you were in Perth I could give u 5 places without any dramas. If your building a "track" car for a certain class (say standard exhaust LOL) and you pay them in cash, I dont see any problems

As for gutting the cat, IMHO why waste a perfectly "good" product.

Your better off going to one of the exhaust places and buying a 3-4" straight thru section and weld some flanges on it. That way if you do have to pass inspection you can always bolt your cat back in :)

Really doesnt cost very much and dare I say, it will flow better than a punched out cat! Of course if the exhaust has less restrictions (without going overboard with 5" straight thru pipe!) its going to make more power. Make the engine breath and your half way there.

I had straight thru 3" exhaust on the wrx. When you start popping out flames other cars back off very quickly LOL. Tunnel runs are a LOT of fun though. It was loud, I could smell the fuel and I passed the pits 3 times with it. So much for massive fines eh ;)

Edited by Mat
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  • Into the laaaake
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  • Member For: 17y 7m 4d
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  • Location: Nrth Qld

that's a very good idea. Ill hit and exhaust place up to see if they will make me a pipe with flanges. They mite get a bit dodgy on that to though????

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  • Member For: 17y 9m 2d
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It wouldnt be a shop doing it. How are the EPA ever going to catch you? Id love to see how much nasty stuff my mini choofs out....and theres not a thing they can do about that! Its not my fault they stopped selling leaded.

I haven't heard of anyone being busted yet but if they smell it and get suspicious they can always send you to an inspection place, at least they can in NSW, not sure where you're from.

Just get a high flow cat and weld it on to the stock exhaust, don't be so cheap.

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  • BACK SLOWER THEN EVER!
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  • Member For: 17y 6m 15d
  • Gender: Male
  • Location: Sydney
that's a very good idea. Ill hit and exhaust place up to see if they will make me a pipe with flanges. They mite get a bit dodgy on that to though????

But if your only going to use it on the track and never on the road whats the problem????

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