Who Makes the Highest Flow High Flow Cat?

Terbro · #1 (**permalink**) January 22nd, 2003, 04:01 PM

ATR? Or if the HF cat's are all comparable, who's got the best price?

Thanks,
Terry

1970gsx · #2 (**permalink**) January 22nd, 2003, 04:26 PM

I have one from Quad Air. It fits the THDP and cost $100 or $120.
I only use it one day a year (emissions) , but it seems like a high flowing cat.

salvageV6 · #3 (**permalink**) January 22nd, 2003, 07:37 PM

I bought the expensive Random Technology one and was gonna leave it on salvageV6.

They did away with emissions and it wouldn't fit easily with the THDP so left it off.

Didn't get to test it out yet. Supposed to be a real race cat.

gofastr · #4 (**permalink**) January 22nd, 2003, 07:41 PM

i bought this one, i forget what company makes it, but it flows the best hands down! I think it's called a hollow pipe converter!

rkreigh · #5 (**permalink**) January 22nd, 2003, 09:18 PM

the random bullet SS cat I believe flows over 500 cfm which is pretty good. since we run single cats we need all the help we can get. I think some of the chevy truck cats flow pretty well too. not sure of the cfm rating, but they are pricey. need to get them from a junk yard.

careful if you live in an emissions state and get caught without your cat. fines are steep!!

I worked at EPA for a bit, and they are nasty if they bust you for emissions tampering!!

salvageV6 · #6 (**permalink**) January 22nd, 2003, 09:44 PM

I left the cats. on the cars for the stunning visual effect.

Just doesn't seem to be much in the way of innards left in them anymore.

TType84 · #7 (**permalink**) January 22nd, 2003, 09:49 PM

oh come on guys way to get SCREWED..

open up a summit

CTO-6007 Universal, 14 in. long, 3 in. diameter slip fit inlet and outlet, stainless steel, catalytic converter ... $46.39

http://store.summitracing.com/partdetail.asp?part=18592

the picture on that link is wrong, mine has no air tube..

and the price has gone up im pretty sure i paid less than $50 shipped..

snistrgn · #8 (**permalink**) January 23rd, 2003, 12:26 AM

If I were you I would buy the cheapest 3in universal i could find, Take a very long screwdriver and a hammer and go to town on it! Then you'll have the highest flowing cat around! Emissions is a whole other story. The converters we sell at our shop are from a company called Carsound. As far as I know they are some of the highest flowing cats around. Installed they run $150 for a low capacity and $250 for a high capacity. I'm sure you could find a muffler shop that sell them in your neck of the woods.

Terbro · #9 (**permalink**) January 23rd, 2003, 01:13 AM

I know. I've thought of that - gutting a cat. Someone told me last week that a no-CAT violation is now a felony? Sounds a bit steep to me. My concern would be releaved with a gutted cat. But honestly, I'm also getting a bit of conscience about polluting. I love clean air, I mountain bike all the time. And when I see all the smog...it bums me out. I'll sacrifice 5 hp for that. Now, if it were 30, forget it. Everyone can slowly die of CO poisoning...I need that extra power...J/K.

T

blackbuick87 · #10 (**permalink**) January 23rd, 2003, 08:49 AM

It probably would be thirty

salvageV6 · #11 (**permalink**) January 23rd, 2003, 09:31 AM

At least 30.

Gained 4 psi. without that restrictive thingy.

Some cars pass emissions without them.

Terbro · #12 (**permalink**) January 23rd, 2003, 11:28 AM

Seriously? 30? Come on...

TType84 · #13 (**permalink**) January 23rd, 2003, 11:46 AM

ok heres a plan....

instead of bending over and getting SCREWED by paying $250 for one of those super cats..

get a 3" catco one.. and an electric cutout.

bam, lose your restriction in 3 seconds, that would be about $200, 50 cheaper than the super cat!

Terbro · #14 (**permalink**) January 23rd, 2003, 12:35 PM

Euuu...en electronic cutout, I'm intriged. Never heard of it. How makes it?

Terry

TType84 · #15 (**permalink**) January 23rd, 2003, 02:05 PM

www.buickgn.com for one.. its a little more expensive

http://www.quicktimeperformance.com/qtec.htm

Terbro · #16 (**permalink**) January 23rd, 2003, 02:45 PM

Very cool...electronic cutout. But I'm having a hard time believing that a "high flow" cat = 30 hp loss. Geese, what's a low flow, 50? I'd hate to have a car with only 100 hp. But seriously, if it were responsible for 30 hp, that'd be the first (being that's the easist) way to gain 30 hp!...remove/gut the cat.

Dyno run data will work well here.

T

blackbuick87 · #17 (**permalink**) January 23rd, 2003, 03:15 PM

Get a cat and you will see.

A cutout is not legal and you will get nailed if someone looks at it

TType84 · #18 (**permalink**) January 23rd, 2003, 03:18 PM

cutouts are legal as long as they arent open

salvageV6 · #19 (**permalink**) January 23rd, 2003, 03:42 PM

This thread is going south fast.

Glad to be a part of it.

Read the cool stuff on Random Tech.s. website.

I would say the increased boost without it would net the 30hp. not necessarily at the same readjusted boost level.

In with the good air and out with the bad air. Uncork that exhaust.

blackbuick87 · #20 (**permalink**) January 23rd, 2003, 03:46 PM

Quote:

Originally posted by TType84
cutouts are legal as long as they arent open

Maybe in TX, but not the whole country. It is not legal in most states to have a way to bypass the catalytic converter