Daily driver volume bullets/round mufflers?
Thread Starter
Launching!
Joined: Aug 2011
Posts: 216
Likes: 0
From: Kennesaw, GA
Daily driver volume bullets/round mufflers? I'm doing a catted 3' true duals setup, run out the back from tailpipes on my stock motor ls1 trans am.
The speed shop doing the work suggested 4 of the cheap summit bullet mufflers to tone it down. I don't want too loud, car is my DD and am not always looking for racecar mode. I want good tone, not excessive volume.
Should I go with 4 of the cheap $30 summit mufflers? 2 magnaflows? I think 2 dynomaxs would probably be too loud. Open to suggestions!
The speed shop doing the work suggested 4 of the cheap summit bullet mufflers to tone it down. I don't want too loud, car is my DD and am not always looking for racecar mode. I want good tone, not excessive volume.
Should I go with 4 of the cheap $30 summit mufflers? 2 magnaflows? I think 2 dynomaxs would probably be too loud. Open to suggestions!
Magnaflow would be best bet.
True duals by design will be loud.
I have true duals also on a stock motor ls1, x pipe and no cats.
Honestly it's only loud on cold starts & WOT.
If you wanted to really play it safe from cops, neighbors try this.
Xpipe->aggressive loud mufflers->electric cutouts -> pipes over axle and into a SUPER quiet muffler.
true duals or almost stock quiet sound on demand
True duals by design will be loud.
I have true duals also on a stock motor ls1, x pipe and no cats.
Honestly it's only loud on cold starts & WOT.
If you wanted to really play it safe from cops, neighbors try this.
Xpipe->aggressive loud mufflers->electric cutouts -> pipes over axle and into a SUPER quiet muffler.
true duals or almost stock quiet sound on demand
Last edited by bad_408_vert; Oct 14, 2014 at 07:51 PM.
With cats and an axleback, Spiral Flows should be tame enough for DD purposes. I have been running them catless and dumped, which does not make for much noise reduction, as part of the muffler is straight-through.
Be sure to post sound clips if you go this route.
Be sure to post sound clips if you go this route.
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Verdad Gallardo Thread Starter
Launching!
Joined: Aug 2011
Posts: 216
Likes: 0
From: Kennesaw, GA
I decided to pull the trigger and ordered Spiral Flows and all the other parts for this custom catted exhaust.
Will take to the shop in the next couple of weeks, stay tuned for sound clips!
Will take to the shop in the next couple of weeks, stay tuned for sound clips!
running tsp bullets in my car and i only drive it about twice a month if the weather is nice. And im looking for new exhaust. My Wife refuses to ride in the car. she gets a headache and nauseous. Probably because im running no cats LOL but yes its effing loud with my H/C/I
Thread Starter
Launching!
Joined: Aug 2011
Posts: 216
Likes: 0
From: Kennesaw, GA
Got my full custom exhaust on! Here is the design. Spartan Performance here in GA did the full install.
3 inch exhaust, run out tailpipes, under axle.
Stock ls1, mods are SLP lid, 4.10s, lowered unknown springs, id guess 1.5in drop up front.
-Speed engineering 1 3/4 headers
-2 (fairly large) Magnaflow cats
-Summit racing 3" xpipe kit
-2 moroso spiral flow bullets
-3.5" out Corsa clones
It sounds AWESOME!! Not too loud for a dd, but startup noise is pretty beastly
No drone at all, not too loud for conversations in the cab but definitely louder than a cat back.
Has a nice rumble to it at idle, almost sounds cammed it's so deep.
Ground clearance is very tight. I scrape on huge speed bumps and the exhaust is very noticeable when you look under the car.
Will attach pics and sound clips later today, car feels smoother and sounds incredible. Sounds just like a muscle car should. Loud enough to be heard and not sneak around, but not too loud to be considered obnoxious by the general public (unless its a cold start 😜
Never heard an ls1 in person like it.
Volume: 1-10
1 = stock quiet
5= typical cat back volume
7.5= SLP loudmouth
10= open headers/straight pipes
This setup=6.5-7 but zero drone/rasp
3 inch exhaust, run out tailpipes, under axle.
Stock ls1, mods are SLP lid, 4.10s, lowered unknown springs, id guess 1.5in drop up front.
-Speed engineering 1 3/4 headers
-2 (fairly large) Magnaflow cats
-Summit racing 3" xpipe kit
-2 moroso spiral flow bullets
-3.5" out Corsa clones
It sounds AWESOME!! Not too loud for a dd, but startup noise is pretty beastly
No drone at all, not too loud for conversations in the cab but definitely louder than a cat back.
Has a nice rumble to it at idle, almost sounds cammed it's so deep.
Ground clearance is very tight. I scrape on huge speed bumps and the exhaust is very noticeable when you look under the car.
Will attach pics and sound clips later today, car feels smoother and sounds incredible. Sounds just like a muscle car should. Loud enough to be heard and not sneak around, but not too loud to be considered obnoxious by the general public (unless its a cold start 😜
Never heard an ls1 in person like it.Volume: 1-10
1 = stock quiet
5= typical cat back volume
7.5= SLP loudmouth
10= open headers/straight pipes
This setup=6.5-7 but zero drone/rasp
Last edited by KingJacobo; Dec 14, 2014 at 12:17 PM.