What's the most high-flow cat for a good price?

[98tranny]

So I'm looking at replacing the stock cat and i need some suggestions on some high-flow cats.

[mark21742]

summit racing has Magnaflow hi-flow universal cats for around $60 each

[9t8z28]

Here are some nice high flow cats.
http://store.summitracing.com/partde...5&autoview=sku

[QKSLVR99]

magnaflow

[rapter34]

why are you replacing your stock cats? you wont see much power gain from getting hi flow cats and if you have stock headers than that is going to be a real pain in the ass trying to get everything to fit right. If you are getting long tubes than that is a different story.

[loreak]

yeah magnaflow are definately the cheapest cats and they are tiny, i bought 2 for about 80 each and they are so much smaller then normal cats its unbelievable

[9t8z28]

yeah magnaflow are definately the cheapest cats and they are tiny, i bought 2 for about 80 each and they are so much smaller then normal cats its unbelievable

$80?? Doesn't sound like a high flow cat at that price? You got a link?

[98tranny]

why are you replacing your stock cats? you wont see much power gain from getting hi flow cats and if you have stock headers than that is going to be a real pain in the ass trying to get everything to fit right. If you are getting long tubes than that is a different story.

i'm not looking to get that big of a horsepower gain, i'm just trying to get my exhaust flowing good. i'm going to start with an slp loudmouth and hi-flo cats and after that i'm saving up for the longtubes. and i dont understand why the cats wouldnt fit on right just because it has stock headers.

[rapter34]

becasue the stock cats have pipes coming on eaither side up th the head and down. so you would need to get it all welded and made it fit. trust me save the money wait till you are putting LT on than get a y pipe.


first notice the conection to the headers. I don't have the view of teh cat but there is about a 6 inch tube after the cat. you are not going to get jack from high flow. the cost is not worth it.
I mean we are talking like 3HP maybe.

[98tranny]

becasue the stock cats have pipes coming on eaither side up th the head and down. so you would need to get it all welded and made it fit. trust me save the money wait till you are putting LT on than get a y pipe.


first notice the conection to the headers. I don't have the view of teh cat but there is about a 6 inch tube after the cat. you are not going to get jack from high flow. the cost is not worth it.
I mean we are talking like 3HP maybe.

so i guess the best thing to do is wait for the longtubes. could you notice a difference after longtubes?

[rapter34]

yes, its does seem to rev nicer and in the uper band it really feels more powerful. couple it with an LS6 intake and you really free up the engine. LT= about 15 RWHP, LS6= about 15 RWHP (between) 4-6K on the RPM's

[N20LT4]

Random Technology over any other cat.

[loreak]

$80?? Doesn't sound like a high flow cat at that price? You got a link?

Thats what the shop charged me that I got my custom exhaust done at, I havent checked what they retail for online.

[9t8z28]

Thats what the shop charged me that I got my custom exhaust done at, I havent checked what they retail for online.

Do you have the part# or the description?

[INMY01TA]

Stock cats flow good, no gain from aftermarket cats.

[N20LT4]

Stock cats flow good, no gain from aftermarket cats.

Your wrong on that one. I've seen too many comparo's in the past that said otherwise. Stock cats suck.

[Eugenio_SS]

waht about gutted cats ?

[N20LT4]

waht about gutted cats ?

Gutted cats tend to make an ugly clickidy-clack sound...other than that, they are pretty much the same as a straight pipe.

[INMY01TA]

Your wrong on that one. I've seen too many comparo's in the past that said otherwise. Stock cats suck.

Well if an off road y pipe connected to stock manifolds gains you maybe 5 hp max, what would high flow cats gain you? Okay, we'll call it 2 1/2 hp (1.25 per cat) and call it a day. Money well spent there.

[Eugenio_SS]

Gutted cats tend to make an ugly clickidy-clack sound...other than that, they are pretty much the same as a straight pipe.

they do perform great... and seem to have cats so cops won't give you trouble.