Quiet True Duals???
Thread Starter
Joined: Jan 2004
Posts: 301
Likes: 1
From: San Francisco
Quiet True Duals??? What bullet mufflers would be the quietest on a dual 3” X set-up, I am obviously not looking for a stock sound but want something that sleeps? What you guys think? 
According to this comparison
https://ls1tech.com/forums/generation-iii-external-engine/119518-muffler-flow-db-comparison-hooker-maxflow-bassani-real-street.html
the Borla Pro XS mufflers would be the most quiet/sleeper. Next would be the Hooker Max Flows and Magnaflows. I found the Pro XS's for $85 each, but you'd have to PM me for the link since it's a non-sponsor site and I can't post it.
https://ls1tech.com/forums/generation-iii-external-engine/119518-muffler-flow-db-comparison-hooker-maxflow-bassani-real-street.html
the Borla Pro XS mufflers would be the most quiet/sleeper. Next would be the Hooker Max Flows and Magnaflows. I found the Pro XS's for $85 each, but you'd have to PM me for the link since it's a non-sponsor site and I can't post it.
Originally Posted by SSInnovations
Thanks for that link, I am going to try the Hooker Maxflow's, if I hate them Ill just stick with the Flowmaster Delta Forces.
TECH Addict
Joined: Dec 2001
Posts: 2,337
Likes: 0
From: Auburn, AL
I have an incredibely quiet system, even with my cam. Here it is:
all mandrel bent 3"
Hooker longtubes, no cats
12" Dynomax bullets before the X-pipe (no restriction with these mufflers)
16" Moroso Spiral-Flows after the X-pipe
pipes under the axle and tips out the back
The main thing, IMO, is getting the pipes out of the back. I would say this setup was about as quiet as my offroad Mufflex y-pipe and Hooker catback. The duals just sound much nicer and meaner at WOT.
all mandrel bent 3"
Hooker longtubes, no cats
12" Dynomax bullets before the X-pipe (no restriction with these mufflers)
16" Moroso Spiral-Flows after the X-pipe
pipes under the axle and tips out the back
The main thing, IMO, is getting the pipes out of the back. I would say this setup was about as quiet as my offroad Mufflex y-pipe and Hooker catback. The duals just sound much nicer and meaner at WOT.
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Verdad Gallardo TECH Addict
Joined: Dec 2001
Posts: 2,337
Likes: 0
From: Auburn, AL
Originally Posted by SSInnovations
QuickWS6-
I would love to see pics, I was thinking about two sets of bullet style's but have never seen it done.
I would love to see pics, I was thinking about two sets of bullet style's but have never seen it done.
Eldebrock RPM muflers. They are around 3.6" thick, & quiet, until you get on it. This is what I run on the car for the street, then switch to a bullet for the track. Check out some pics in the sig. I think I have one showing the ground clearance.
Turbo mufflers suck. They arent quiet at all and are restrictive. According to the dynomax website the true 3" muffler is 5 1/2 inches tall and only flows 550cfm. THe 2 1/2" muffler is 4 1/2" tall and flows 450cfm.
The straight through mufflers flow much better. The 2 1/4" mufflers out flow the turbos with 700 cfm. For comparison a good 3" catback flows 2000cfm. If youre gonna go through the trouble of getting duals you dont want to bottleneck the power with crappy mufflers.
The straight through mufflers flow much better. The 2 1/4" mufflers out flow the turbos with 700 cfm. For comparison a good 3" catback flows 2000cfm. If youre gonna go through the trouble of getting duals you dont want to bottleneck the power with crappy mufflers.
Teching In
Joined: Feb 2004
Posts: 28
Likes: 0
From: Killeen, Tx. Currently in Iraq
Originally Posted by quickWS6
I have an incredibely quiet system, even with my cam. Here it is:
all mandrel bent 3"
Hooker longtubes, no cats
12" Dynomax bullets before the X-pipe (no restriction with these mufflers)
16" Moroso Spiral-Flows after the X-pipe
pipes under the axle and tips out the back
The main thing, IMO, is getting the pipes out of the back. I would say this setup was about as quiet as my offroad Mufflex y-pipe and Hooker catback. The duals just sound much nicer and meaner at WOT.
all mandrel bent 3"
Hooker longtubes, no cats
12" Dynomax bullets before the X-pipe (no restriction with these mufflers)
16" Moroso Spiral-Flows after the X-pipe
pipes under the axle and tips out the back
The main thing, IMO, is getting the pipes out of the back. I would say this setup was about as quiet as my offroad Mufflex y-pipe and Hooker catback. The duals just sound much nicer and meaner at WOT.
On The Tree
Joined: Sep 2002
Posts: 118
Likes: 0
From: Fort Worth, TX
the quietest setup in my opinion without sacrificing flow is to use the 18" bullets. That's what I have going all the way to the back under axle. And car sounds very quiet at idle but roars under WOT. My main concern was annoying sound and vibration and this is the solution without affecting flow.
The 18" bullets are newones from dynomax and are 2.5" diameter.
The 18" bullets are newones from dynomax and are 2.5" diameter.
