Midnight00SS

Have them on my car, but who the heck makes them and wut kind are they???

Midnight00SS

anyone?

Midnight00SS

anyone having ground clearance issues wit them too?

Midnight00SS

can u hollow them out?

Dskeet6

iTrader: (20)

do not hollow them out......... high flow cats DO NOT rob hp..... forget the idea its not worth it.

Midnight00SS

im guessing it will make it sound worse? just seems not too loud driving around town unless u get on it? not really worried about hp

Jon@Texas-Speed

iTrader: (18)

If you are wanting to make it louder, you could always buy the two pieces out of the ORY and just swap the cats back in when you have the car inspected or emissions checked.

Jon

Midnight00SS

yea i wish i could but i drive the car everyday lol

02 camaross91

they are high Flowmonster cats i have them on mine and if u look at pics of the tsp to the flomonsters they have the same markings

Midnight00SS

cool so they are pretty high flow then?

Midnight00SS

why does this setup hang so low ?

TooLateVTEC

iTrader: (2)

It hangs lower b/c your probably used to seeing the stock flattened pipe in there and now your looking at a full 3" pipe that takes up way more room than the old.

One day when I have time, I think I might add an exhaust hanger somewhere around the merge to hold the y-pipe up a little bit more.

Midnight00SS

u know ur right i never thought of it that way, but my old setup was a pacesetter y with no cats and i do remember now it was flatten, and this is more oval and straight through, its just really bugging me cause i would love to lower the car but i dont think i can

drewbruce

what's a pro 5.0?

Element

iTrader: (5)

Short shifter.

I might be completely off here, but I thought most "high-flow" cats flowed pretty close to OEM honeycomb cats? The "high flow" thing was, at least the impression I was under, in comparison to the old pellet/bead style catalytic converters. I know the aftermarket ones are typically smaller, weigh less, tuck better, etc, but I'm curious as to whether anyone's done any empirical testing on an OEM and an aftermarket cat.

matt224

Even OEM cat vs no cat won't be a huge difference. Removing OEM cats might yield what, 5 hp? Keeping the cats can also reduce the rasp in your exhaust, I say leave 'em.

Midnight00SS

yea it actually sounds pretty good wit cats on there