Stock Cat Or Not?

[rondofj]

Hey guys can some one please identify if this is the stock cat that I have under my car?? I had a full 3" exhaust from the turbo back when I bought it (and still do) so the guy who did the exhaust (previous owner) couldnt have left the cat as a stocker. I really hope its not the stock cat.

Can someone please identify if I have the stock or aftermarket cat, thats the only pic I have.

thanks

Edited March 5, 2011 by rondofj

[DVS JEZ]

Looks stock

[rondofj]

Does it?? Damn I have to change it then, still not sure if it is stock - why would anyone change the whole exhaust and leave the stock cat, is the stock cat 3" hi flow or smaller?

[Moodles2]

It could be gutted who knows, best to drop the catback or the frontpipe and shine a torch through, it could even be a 2.5" cat.. or it could even be a de-cat with a heatshield to disguise it, really should take it off.

[rondofj]

thanks guys, whats the cheapest 3" hi flow cat out there, bestmufflers.com have pacemaker ones for $210.? What suggestions would you have?

cheers

[GTRPSI]

Weld in quality High Flow cats with metal substrates (so they dont burn out) are around the $170 mark on ebay.

http://cgi.ebay.com.au/Universal-Catalytic-HIGH-FLOW-200-CPSI-converters-/130485317656?pt=AU_Car_Parts_Accessories&hash=item1e6187f018

If you want to save your dosh, gut the stock one.

It sort of looks like its stock, take it off and check if its 3" and not smaller and bolted to your 3" system.

[rondofj]

Thanks buddy, by gutting, do u mean remove the internals or 'guts'? Didnt think it would have any as its internal pipes supposed to be a 'free flow path' for gasses with the bits around it..

Weld-in cats I assume would be expensive as I wud have to have flanges welded etc??

[GTRPSI]

Gutting removes the internal honeycomb which is a restriction.

Gutting is highly illegal, if you get slapped with a EPA test you will need to get a stock cat to pass the test and stay out of trouble.

For weld in cats they cut the old cat out, keep the flanges, and weld the flanges onto the new cat.

[KiwiRS4T]

Or get 100psi one from here:

http://www.venomexhaustworks.com.au/products.html

Gutted cat, apart from being illegal, can make your exhaust sound cr*ppy. Splash out on a quality metal one and it should last for years.

[rondofj]

Sweet, I'm lookin at these from justjap -

http://www.justjap.com/store/product.php?productid=18070&cat=275&page=1

http://www.justjap.com/store/product.php?productid=16436&cat=275&page=1

Both $175 each - maybe go with the xforce one? f**king cat, another hassle to sort out.

cheers

[W0rp3D]

Does it?? Damn I have to change it then, still not sure if it is stock - why would anyone change the whole exhaust and leave the stock cat, is the stock cat 3" hi flow or smaller?

My car was meant to have a full 3" system, on closer inspection it had the standard front dump, 3" dump, standard cat and 3" cat back, no idea why ppl would do it, its just a waste of money!

Thanks buddy, by gutting, do u mean remove the internals or 'guts'? Didnt think it would have any as its internal pipes supposed to be a 'free flow path' for gasses with the bits around it..

Weld-in cats I assume would be expensive as I wud have to have flanges welded etc??

dont gut your cat you made need it in the future, just put it aside for when you may need it.

The cat you get depends on how much power you want, i have a jjr xforce, was fine for 200rwkw but now im looking at pushing it to 300rwkw its time for a new one.

[Moodles2]

Xforce Vs. Catco, I would choose the Catco one just because it would pass an emissions test while the Xforce wouldn't.