exhaust is too lound help
05-03-2010, 10:10 PM
#1
exhaust is too lound help [B]Hi I'm new to ls1tech and i need your guys help! I just built a 383 stroker street/strip! it has 243 heads ported and milled to 61cc, ms4 camshaft, fast ported 78mm intake, 80mm TB, underdrive pulley, K&N COLD AIR INTAKE, PaceSetter LT Headers, ORY and Hooker Street Force Cat-Back System no catalytic converters!! I just started my car and my concern now is that is too loud you can hear my car 15 houses away what can i use or change to minimize the sound a little?
05-03-2010, 10:36 PM
#4
Umm, you could start by putting high flow cats on. if you're worried about performance you could put a cutout before them.
another popular thing to do is to put a quieter muffler on. but who would want that?
another popular thing to do is to put a quieter muffler on. but who would want that?
05-03-2010, 11:30 PM
#6
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Even with the stock catback my firebird is kind of loud. Quiet at idle and cruising, but really wakes up whenever you get on it. I plan on sticking a cut-out in the I pipe for the track, but I honestly have no desire for a louder catback. The LT's and ORY made it loud enough.
05-04-2010, 04:01 PM
#7
As suggested above, you could toss a catted y-pipe in there to mate with the headers -- that would get you a decent reduction on the volume.
Plan B would include simply driving it and getting used to the sound. You won't find many around with those mods that don't sound like a freight train coming down the road!
Plan B would include simply driving it and getting used to the sound. You won't find many around with those mods that don't sound like a freight train coming down the road!
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05-04-2010, 04:10 PM
#8
Some even suggest using bullet mufflers instead of cats if you don't want to run cats. Otherwise, high flow cats are your best bet IMO
Another possibility is to get an SLP dual/dual catback. They are regarded as about the quietest catback and still flows well.
Another possibility is to get an SLP dual/dual catback. They are regarded as about the quietest catback and still flows well.
05-04-2010, 08:58 PM
#10
Hi guys!! Thanks for the input!! I will drive the car for about a month before i make any changes and see if i get used to it and also see what kind of comments i get worst case scenario i will install hi flow cats or bullet mufflers whichever flows better just need to do some research i just hope i don't get pull!!
05-04-2010, 09:58 PM
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[B]Hi I'm new to ls1tech and i need your guys help! I just built a 383 stroker street/strip! it has 243 heads ported and milled to 61cc, ms4 camshaft, fast ported 78mm intake, 80mm TB, underdrive pulley, K&N COLD AIR INTAKE, PaceSetter LT Headers, ORY and Hooker Street Force Cat-Back System no catalytic converters!! I just started my car and my concern now is that is too loud you can hear my car 15 houses away what can i use or change to minimize the sound a little?
How do you do at the track? I broke my tranny right after i got my motor put together.
So i havent had a chance to run it yet. 
05-06-2010, 10:50 AM
#16
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Even with the stock catback my firebird is kind of loud. Quiet at idle and cruising, but really wakes up whenever you get on it. I plan on sticking a cut-out in the I pipe for the track, but I honestly have no desire for a louder catback. The LT's and ORY made it loud enough.
Thanks
05-12-2010, 04:27 AM
#17
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when i bought mine it had long tube headers full 3" exhaust LM1 it just seemed very obnoxsious (how ever u spell it) my car sounded faster then it was lol i put 2 hi flo cats on it...i love the way it sounds, still sounds mean as a bitch but it took out the dingy sound, and i didnt notice to much difference in performance
05-12-2010, 10:40 AM
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when i bought mine it had long tube headers full 3" exhaust LM1 it just seemed very obnoxsious (how ever u spell it) my car sounded faster then it was lol i put 2 hi flo cats on it...i love the way it sounds, still sounds mean as a bitch but it took out the dingy sound, and i didnt notice to much difference in performance
Perfect because after seeing the TSP ORY with Hi flow cats and some Pacesetter LT I think I may go this route and see how it sounds with my stock SLP dual dual. Is my dual dual the LM1 or LM2 or totally different?
Thanks
