Exhaust sounds like sheeeetttt!!!
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From: Southern Ohio
Exhaust sounds like sheeeetttt!!! Just did a big H/C swap adn many boltons, which included LT's and 3"ORY. I already had teh TSP Rumbler catback exhaust on my car. Well it sounds bad as hell at idle and WOT, but anything in between it "slaps" and pretty much sounds like ****. Did this happen to anyone else? Any recommends?????????
Thread Starter
TECH Apprentice
iTrader: (18)
Joined: Aug 2005
Posts: 308
Likes: 0
From: Southern Ohio
loud is fine with me, I just dont want it to sound like ****. i was thinking maybe tsp true dual, but ive heard it vibrates the **** out of everything. any other suggestions.
Check this out....
https://ls1tech.com/forums/generation-iii-external-engine/462478-pics-completed-true-dual-over-axle-exhaust-w-edelbrock-lt-s.html
there is a video also.
https://ls1tech.com/forums/generation-iii-external-engine/462478-pics-completed-true-dual-over-axle-exhaust-w-edelbrock-lt-s.html
there is a video also.
When you say "slap" do you mean "blats it's *** off" if you hit the gas under a load? It "blats" the more you lug the gear? If so that's called *rasp*, and I'd expect it form a set-up like yours. That's just the way it goes.
You only way to rid that is to get a quieter muffler like a Corsa or SLP DD.
That's why I left my DD in place after I did the cam, headers and off-raod y. If you had cats it would remedy the issue, but that would choke the cam.
My SLP sounds really good, and gets beastly at wide open throttle. It still has a mature sound to it. I guy told me just yesterday that he hasn't heard an exhaust note like that since 1972!
You only way to rid that is to get a quieter muffler like a Corsa or SLP DD.
That's why I left my DD in place after I did the cam, headers and off-raod y. If you had cats it would remedy the issue, but that would choke the cam.
My SLP sounds really good, and gets beastly at wide open throttle. It still has a mature sound to it. I guy told me just yesterday that he hasn't heard an exhaust note like that since 1972!
You could throw some cats in there and put a Borla XR-1 in the I-pipe. We just put the hooker longtubes w/ o/r y-pipe on a friends car with the dynomouth, and it's exactly as you've described it. The mid range has a very annoying rasp.
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^^^ I'm with him! ^^^
Check the link to my exhaust setup in my sig, tons of pics, videos, and info on there. The problem is your catback. The TSP rumbler system is almost identical to an SLP Loudmouth.
LT's + ORY + Loudmouth = one of the most hated LS1 sounds ever.
Check the link to my exhaust setup in my sig, tons of pics, videos, and info on there. The problem is your catback. The TSP rumbler system is almost identical to an SLP Loudmouth.
LT's + ORY + Loudmouth = one of the most hated LS1 sounds ever.
Originally Posted by FIREHAWK#608
You only way to rid that is to get a quieter muffler like a Corsa or SLP DD.
Originally Posted by TransAm6383
my friend got the rasp out of his car with long tubes and LM by putting a bullet muffler in there..helped ALOT.took out the rasp at low rpms
It must have been REALLY raspy before! Like I posted above, my friend has the same setup. Longtubes, o/r Y and dynomax bullet, and it's EXTREMELY raspy! IMO, you'll need more than a bullet muffler to calm the rasp.
I think a true dual setup with some type of resonator/muffler will get rid of all the rasp. my stainless work 3" duals sounds nascar style. 
My former camaro's single/y-pipe hooker catback setup always had a little rasp until i put in cats.
My former camaro's single/y-pipe hooker catback setup always had a little rasp until i put in cats.
Originally Posted by Benjamin Russick
Borla XR-1 in place of the resonator/muffler. Makes a bigger difference than you would think...
The cause of rasp really isn't which catback or muffler you have. It's the y-pipe that causes the rasp. Some mufflers/catbacks cover it up better than others. The exhaust "slams" into each other at a certain rpm when in merges into the i-pipe. The only way to actually get rid of it (not cover it up) is to switch to a well designed y-merge collector (flowmaster y-merge for example) or switch to a true dual setup. My old setup (macs/ory/cutout) was the King Bastard of all rasp. Switching over to lt's/x-pipe/1 chamber flowmasters has eliminated any hint of the crappy sounds I used to have.
i also have tsp rumbler with ory and longtubes and i dont like it half the time but the other time i do so i dont really know what to do.... i really dont care i guess ill be about half happy
Originally Posted by jmm98LS1
The cause of rasp really isn't which catback or muffler you have. It's the y-pipe that causes the rasp. Some mufflers/catbacks cover it up better than others. The exhaust "slams" into each other at a certain rpm when in merges into the i-pipe. The only way to actually get rid of it (not cover it up) is to switch to a well designed y-merge collector (flowmaster y-merge for example) or switch to a true dual setup. My old setup (macs/ory/cutout) was the King Bastard of all rasp. Switching over to lt's/x-pipe/1 chamber flowmasters has eliminated any hint of the crappy sounds I used to have.