smg267

iTrader: (23)

Hey guys I just got my SLP longtubes and off road y-pipe on today. I put it on my stock catback. Needless to say when i started the car I was like It sounds all raspy like a Mustang. I talked to the guy that installed the headers for me and he said that if i put a muffler on it would just make the car louder and raspyier. All you guys with ORY how do you do it? I heard alot of sounds on ls1sounds.com and nothing could of prepared me for this! I know everyone says flowmasters suck but I am seriously considering puttin one in to save some face! Any thoughts and help on the subject would be greatly appreciated!
Thanks in Advance,
Steve

orangeapeel

iTrader: (18)

What stock catback do you have? SLP?

smg267

iTrader: (23)

Its the one on the Z/28's. Thanks for the quick reply

NHRAMAN

iTrader: (1)

get a different muffler. I have LT'S+ORY+QTEC+5 year old Flowmaster and it sounds good....

smg267

iTrader: (23)

Do you get alot of rasp? Maybe I am not used to it? What series flowmaster did you go with? It only sounds weird when I shift and start it up.

johnpate01

iTrader: (3)

Maybe you have exhaust leaks?

INMY01TA

iTrader: (1)

Flowmaster sounds aweful on the LS1 with headers and no cats. Want no rasp? Put cats on it.

99huggercamaro

iTrader: (21)

flowmaster sounds great. i know of 3 fbadys near me and it sounds great and they get the same power at all the others. i dont know y people put them down. go with flowmaster.

IrocTransAm

I agree with 99Hugger. The Flowmaster DOESN'T flow the best but by no means does it sound terrible. It is quieter than most of the systems and I know of 3 people in our club that love it just because it is not overdone nor raspy. Sounds pretty kick butt too bad it doesn't flow the best but who cares anything is better than stock!!!

INMY01TA

iTrader: (1)

Sorry, I had one. Sounded like a hollow tin can with lots of rasp. Blew a hole in one of the welds a few months after the headers/ory went on. POS all around.

tylerz28ss

I have lt's/cats/stock mid-pipe/flowmaster, and it doesn't sound very bad at all...I've had many compliments (especially from kids - "holy crap, mister, your car sounds awesome!...Ma I want one when I grow up" )

Everyone disses me for going back to cats in a non-emissions test state, but hey, I've heard the average ls1 with lt's and no cats and let's just stay that they were not pleasing to the ear ("Who keeps farting?... No son, that is your average ls1 with no cats)

The only ones I have heard sound very nice were those with TSP true duals...very nice, but not in my neighborhood!

LT1's, on the other hand, sound great almost regardless of the set up with no cats...

01FormulaTA

iTrader: (20)

sounds like exhaust leak to me for sure.....the stock catback should not have alot of rasp, the stock mufflers do their job very well(muffle sound), or maybe its not the stock muffler, are you the original owner?

J E T

iTrader: (5)

Get a Magnaflow or Hooker to compliment the headers/ory and you will be driving with a smile on your face.

TheBlurLS1

iTrader: (8)

I don't understand how the stock z28 catback can be raspy. Are you sure it's stock? Post some pics of it.

I would suggest the flowmaster and a cutout, the SLP dual/dual (if you can find one) or a hooker catback.

ryanfx

iTrader: (2)

i'm willing to bet it's not entirely a stock catback. Probably a swapped muffler. If you get a magnaflow muffler, a lot of people like that with the ORY combination.

Urban Legend

iTrader: (5)

Put a Borla on it with no plate. You'll love that.

smg267

iTrader: (23)

Yeah its was bone stock when I bought it. I will get a pics up later tonight,. How Would i check for exhaust leaks? I know its a stupid question I was just suprised on how the car sounded even when i start it up you car hear the rasp for a little bit. I am trying to get used to it Thanks again guys!

spazzyfry123

iTrader: (4)

Get true-duals man. I've got no rasp on my setup and it was cheap as hell (just bought the Summit Racing universal X-pipe and welded it up to my long-tubes with Dynomax Bullets dumped). I get nothing but compliments about how it sounds. It's pretty satisfying when you take another LS1 owner with an off-road Y-pipe for a ride in an off-road X-pipe LS1. I always get the same response: "Damn that sounds good, I think I'm going to change over to true duals!"

smg267

iTrader: (23)

everyone running the flowmasters what series are you using. I know there are a million someone told me to run the 80 series.? I want a good mellow tone but nothing ridiculous. My dad got a flowmaster muffler swapped on his ws6 and it sounds a million times better than my headers! I have no idea what series he got on though meinke did it.

joblo1978

iTrader: (14)

Yeah right, haha.

It's the y-pipe dude. Put some cats in it, get a catted y, or maybe a bullet in the I-pipe.

I hate how LS1's without cats sounds.