Meowww...

hmm... bad joke.

Hey, anyone fitted a high flow cat? If so, what brand is it? I know that Lukey and Magnaflow have them. Wondering what else is available.

Meowww...

hmm... bad joke.

Hey, anyone fitted a high flow cat? If so, what brand is it? I know that Lukey and Magnaflow have them. Wondering what else is available.
I've got Genie 2.5" ones.

Is it possible to clean CATs?

Yuk, I hope not. There's evil stuff in them. After all they are collecting bad stuff before it gets to the atmosphere.

What was the Geanie one worth? Do they all bolt up to the same size flages / bolts etc or is there simple fitment issues?

depends how you buy the CAT, flanges are just welded on at the exhaust place. So how do you tell if the CAT is stuffeD?

I had genie do it through RPW when I was in Perth. Its flanged but can't tell you the bolt
pattern etc.

If the cat is stuffed, the performance of the car will deteriorate. You'll also notice a different
(bad) smell in the exhaust.

Is it possible to remove and replace a cat woth out welding? E.g if i had 2 tr magnas sitting next to each other could i swap there cats with out welding.

Is it possible to remove and replace a cat woth out welding? E.g if i had 2 tr magnas sitting next to each other could i swap there cats with out welding.
Depends if they were flange connected or welded on. If they had flanges front and back of the
cat then its simply unbolt swap and bolt. I pressume most cars cats have flanges front and
back.

Magnaflow also do hi flow cats.

Magnaflow also do hi flow cats.

Yup, thats what Redav said in his original post. :D

Lukey's Super Cat Converter range are apparently ok, anyone on these forums able to comment?

i have one of those lukey cats
How do u tell if its good lol. I mean i have more power and it seems to work so i would give a thumbs up but its hard to judge how good they are i suppose

the best one is meant to be the "magic cat" its not even shaped like a muffler but is round like the rest of the pipe. meant to be good for 20-40kw in a 4" system :shock:

Are cats definatly worth looking into?

Orginally i was told not to bother but if you can grab an extra 20-40kw outta one then it may be worth it...

the best one is meant to be the "magic cat" its not even shaped like a muffler but is round like the rest of the pipe. meant to be good for 20-40kw in a 4" system :shock:
That gain might be seen on a higher power car already but as if you'd see that on a Magna.

Orginally i was told not to bother but if you can grab an extra 20-40kw outta one then it may be worth it...

Dreaming, You won't see those sorts of gains on only a mildly moded Magna obviously! :nuts:

Perhaps when combined with Extractors/Headers and a full cat-back exhaust system you "might" and I stress might get close to that depending on what other breathing mods you've done e.g. Pod filter & CAI, Throttle Body etc.

nah that 20-40 kw atw gain will only happen on a 300kw turbo

I dunno the conversion to horsepower, but fitting a test pipe(I think this is what he was referring to) or racing pipe will give you about 10-15 hp. Here's an example. http://www.maximalperformance.net/products/testpipes.html

Are cats definatly worth looking into?

Orginally i was told not to bother but if you can grab an extra 20-40kw outta one then it may be worth it...

Do you realise this "magic cat" he's talking about is actually just a straight piece of pipe in place of the cat? :)

The original philosophy was that if you can gain power by changing a restrictive muffler design to a straight through unrestrictive design then surely the muffler was the most restrictive part of the exhaust, therefore the cat converter can't pose much of a restriction, right?

I guess it depends on how much power you're making. A stock car is probably not going to see any gains from a high flow cat, just as they won't see much from a 3" exhaust. But once you've got headers, a chip, blah, blah, then there's probably a point.

Replacing the cat, especially on a 2nd gen, isnt such a bad idea when you consider their age etc. On newer ones it probably wouldn't be such an issue. But if you are upgrading the exhaust system, you might as well get rid of all restrictions and get a high flow cat at the same time.

Yes it might not be essential, but you're aleviating all known areas for restrictions at once.

That reminds me I need to replace the cat on my car lol

Do you realise this "magic cat" he's talking about is actually just a straight piece of pipe in place of the cat? :)

The original philosophy was that if you can gain power by changing a restrictive muffler design to a straight through unrestrictive design then surely the muffler was the most restrictive part of the exhaust, therefore the cat converter can't pose much of a restriction, right?

I guess it depends on how much power you're making. A stock car is probably not going to see any gains from a high flow cat, just as they won't see much from a 3" exhaust. But once you've got headers, a chip, blah, blah, then there's probably a point.

the magic cat is a straight pipe but does have special mesh inside as well, the test review i read about showed the dyno gain but not any test of if the car still complied with emissions...so u want to be careful of that
but yeh u wouldnt get one of these unless u were hugely increasing the power and exhaust flow of the car anyway.

So it really exists? huh. I thought you were just being a smart arse :D lol Fair enough then. Doesn't sound like it would meet emissions standards though, unless it's really long to make up for its seemingly obvious lack of absorption powers.

unless it's really long to make up for its seemingly obvious lack of absorption powers.

you could have a really short one that is constantly at +500 degrees will work too! CAT doesn't do any absorbing, it just burns whatever it can up.

you could have a really short one that is constantly at +500 degrees will work too! CAT doesn't do any absorbing, it just burns whatever it can up.

the magic cat is the normal length to bolt straight in, but since the holes in the mesh are bigger and there is much less area of it, i doubt it can meet the emisdsion tests. :doubt:

You 'WILL NOT' pass any type of emmisions with a test pipe/racing pipe. I don't know what you could add in a 2.5-3.0 inch pipe that could burn exhaust fumes, but whatever they're adding in there isn't going to help with passing emmisions tests. If you have to take your car in for emmissions test you need to keep the original cat, find a test pipe that's a bolt on, and then when you need to go in for testing remove the test pipe and replace it with the cat. After you pass go back to the test pipe. Also consider that if your muffler tips are not extended out pass the bumper you'll probably experience some discoloration because of some of the gases hitting that bumper.

As far as performance it's been dyno'd and test pipes will give a 10-15 hp gain(you don't need a beast of car for this gain) while hi-flow cats don't really do much at all. Maybe 2-5 hp.