Need A New Cat For R32 Gtr : Glutted, New Cat Or Test Pipe?

[cobrAA]

I just came back from the dyno and my GTR did a nice 260 whp at 12 psi with GT-SS ( sarcasm ). My tuner said I NEED to change my cat, we found some piece of the cat on the ground it's really block.

What are my option !? I don't want some cravy 600$ sard or nismo cat. I want to keep the oem look. So, I was thinking about buying a high-flow cat and weld the heat shield on it so I can keep that oem-look.

What do you guys think?

[boostn0199]

Why do you want to weld the heat shield onto a hi flow cat? Its not like there illegal, people only weld the stock heatshield on when there using a stright pipe to make it look stock.

[TiTAN]

just get a good aftermarket cat, there are lots out there to choose from.

[R31Nismoid]

^ Agreed.

For around $350 as well pretty certain you can get a 3.5"-4" cat.

Ideally you want something 4"

[cobrAA]

^ Agreed.

For around $350 as well pretty certain you can get a 3.5"-4" cat.

Ideally you want something 4"

why ? My RS*R is 3 inch. It won't fit.

[Nee-san]

Hey Cobraa,

If you have a look on Ebay, there are a couple of cats, the main one manufactured by a workshop in western australia that are reasonably cheap $200 - $230 in 4 or 5".

They use 100cpi metal matrix if i remmember correctly and these should flow sufficiently for your GT-SS's and at that price if your really chasing the power you can probably afford to knock the internals out for use on the track

[TiTAN]

why ? My RS*R is 3 inch. It won't fit.

its the body of the cat, not the size of the flanges on it.

[gwin]

I'm after one too

AFter researching Just Jap have the most resonable stock.

Catco/Xforce $175 each bolt on.

450+CFM. $370 for the 700CFM.

I'm probably gonna get the xforce $175 one

*edit btw Catco ones COME with the heatshield.

*edit again, there was a dyno done somewhere, hiflow vs testpipe. No HP difference. Obviously crap cat vs highflow/test pipe would be obvious. So just stick with Hi flow for legality purposes.

[r33canada]

X-Force 3" Stainless High Flow Cat

it flows up to 570 cfm...

anyone know what a stock cat would flow roughly?

[gwin]

There was a test done. Something stupidly low

[r33canada]

There was a test done. Something stupidly low

lame! makes me want to remove mine again, but right now it's the only thing holding back the annoying drone at 2000rpm

[SiR_RB]

X-Force 3" Stainless High Flow Cat

it flows up to 570 cfm...

anyone know what a stock cat would flow roughly?

I got one of these on my r32 gtr making 205awkw @ 6000rpm with just exhaust, pods and 14psi. Seems to do the job good for the price!

[cobrAA]

X-Force 3" Stainless High Flow Cat

it flows up to 570 cfm...

anyone know what a stock cat would flow roughly?

I would also like to know this!

My muffler shop told me about magnaflow cat.. but that 175$ catco seems right too. Don't know which one flow better.

[Nee-san]

I got one of these on my r32 gtr making 205awkw @ 6000rpm with just exhaust, pods and 14psi. Seems to do the job good for the price!

http://cgi.ebay.com.au/SS304-4-High-Flow-M...=item2c51eb3c08

Have a look at that bad boy.

[pistol-pete]

Straight pipes all the way mate

[R31Nismoid]

Just get the biggest CAT your budget allows for and never have to worry.

If you can afford a 4" cat, get one - you wont hurt the setup at all.

[Nee-san]

Straight pipes all the way mate

I actually run a high flow catalytic converter business, which drastically increases the flow through the unit whilst retaining the standard shell

[DLOOOK]

Wouldn't go the high flow Xforce Cat. Had one on mine and after 2years its rattling so had to bin it.

[r33canada]

anyone know the exact size of a stock cat from flange to flange. im supposing that gtrs and gtst's are the same.

[bozodos]

bash it, or buy a decent metal cat

IMO the ceramic 'high flow' cats are a waste of time.