brucealmighty744

iTrader: (2)

Here is the deal. I have a stock 94' trans am, but I am going to be getting LPP lts and a GMMG chambered exhaust put on real soon. I heard the GMMG doesn't sound too good without cats so I am in the market for one. Which one would be good for this setup and how much should I plan to spend? I don't want rasp, crackling/popping sounds, but I still want it to be pretty loud. PLEASE help a fellow f-body owner out.

brucealmighty744

iTrader: (2)

BTW there is a y-pipe coming in with the headers from LPP...I am kinda new, is there any difference from a y-pipe and a ORY??? thanks guys.

69lemansguy

iTrader: (12)

ORY pipe = off road Y pipe. other words, NO CATS.

xRelapse13

iTrader: (21)

yeah, what u want is a catted y pipe, i'm running magnaflow 3 inch round hiflow cats and am pretty happy with them.

yodas little brother

iTrader: (2)

keep the cats off

Striped02WS6

iTrader: (6)

as someone above me already said magnaflow makes some nice small cats for our cars....dont buy them just yet...put the exhaust on and see if you like the sound first...my buddy bought into the GMMG without cats doesnt sound good so he bought a catted y pipe...he didnt like the sound so i let him borrow my y pipe and in turn loved the sound...its a little louder and has some rasp to it....imo rasp isnt the end of the world....in any event what is the worst thing that could happen? you have to buy cats lol...

hope this helps..

mike

99_SS_LS1

iTrader: (4)

magnaflow cats work well, will make the gmmg sound real good. I got alot of complements, even before the cam

colews6

iTrader: (1)

with h/c/i cars gmmg with long tubes and catted y will sound good. maybe a little to loud without.

Pushead

Oops, wrong thread.

brucealmighty744

iTrader: (2)

ty for all of your opinions and advice. if i just installed the ORY and everything else and later decided it was too poppy could i just have a mechanic weld a cat real quick and cheap in the i-pipe without taking anything off? thanks

RevGTO

iTrader: (12)

Go on Magnaflow's website and see if there's a Carsound cat that'll fit your application. They have more sound deadening effect than the higher flow metallic spun cats.

If you're using just one cat, you'll need to make sure that it flows enough. You may want to go to a 96+ set-up using two cats.

mph476

iTrader: (7)

if I run the metallic spun cats with the gmmg will it sound like I'm running no cats at all since it flows so well?

madmo

iTrader: (2)

I have GMMG without cats and it sounds great imo, carsound has some good cats do some research.