Quiet Muffler?
#9929
01/13/04 03:46 PM
01/13/04 03:46 PM
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Anonymous
OP
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Anonymous
OP
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I'm looking for quiet mufflers for my Challenger. Currently I have TTI headers with 2 1/2" pipes, Dynomax Turbos and and over the axle turndown pipes. As it is I need something a little more daily driver friendly. Any suggestions?
I use to have an H-pipe that I had to take off when I converted the car to a four speed. I'll probably get the Summit X-pipe set-up with the new muflers, which should help quiet things down a little.
The rest of the set-up is a 360, XE268, & Airgap.
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Re: Quiet Muffler?
[Re: 69DartGT]
#9931
01/13/04 04:19 PM
01/13/04 04:19 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
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I Live Here
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Grand Haven, MI
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I've heard the Accurate Ltd. hemi repro mufflers are pretty quiet.
or look at the large body dynomax mufflers if they'll fit--I have a single 3" in/out on my car and it's not bad. a little drony around town, very quiet on the highway. a set of muffs (i.e. dynomax bullets) right near the header collectors and then a secondary turbo muff in the OEM location might quiet things quite a bit
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Quiet Muffler?
[Re: patrick]
#9932
01/13/04 04:25 PM
01/13/04 04:25 PM
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Anonymous
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Anonymous
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I've seen the larger body Dynomax in their catalog but still need to get under the car and see if they'll fit. They're about another 4-5" longer.
The car was quieter with the H-pipe and I've heard X-pipes are even better.
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Re: Quiet Muffler?
#9933
01/13/04 05:10 PM
01/13/04 05:10 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
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I Live Here
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Posts: 16,123
Grand Haven, MI
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and 1" taller & 1" wider. it's a big A$$ muffler. fit in my M body's stock location, though
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Quiet Muffler?
[Re: pettyblue440]
#9937
01/13/04 09:33 PM
01/13/04 09:33 PM
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Joined: Jan 2003
Posts: 9,876
Weddington, N.C.
Streetwize
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master
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Weddington, N.C.
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I'd go with the dynomax Hemi turbos, had a 2 1/2" pair with my 440, now have the 3" versions behind the 508.
The 2 1/2"s are essentially 20" versions of the 14" Dynomax Turbos. I actually prefer the Stealthiness of an Authoritive but not overly-loud system. I associate real loud "look at me" exhausts with the not particularly fast (Fart pipe Hondas, open pipe Harleys, etc), I guess it's "If you can't go fast, be annoying!" mentality 
To me, cars that are faster than they sound are wayyyy cooler, I'm not talking at all about a 'Whoosh-mobile' sound, just a nice rumbly sound without all the extra decibels.
They perform pretty well too as tested here:
http://www.jr333.com/pontiac/exhaust.htm
Last edited by Streetwize; 01/13/04 09:40 PM.
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Re: Quiet Muffler?
[Re: Streetwize]
#9938
01/14/04 11:22 AM
01/14/04 11:22 AM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
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I Live Here
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Posts: 16,123
Grand Haven, MI
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Quote:
I'd go with the dynomax Hemi turbos, had a 2 1/2" pair with my 440, now have the 3" versions behind the 508.
The 2 1/2"s are essentially 20" versions of the 14" Dynomax Turbos. I actually prefer the Stealthiness of an Authoritive but not overly-loud system. I associate real loud "look at me" exhausts with the not particularly fast (Fart pipe Hondas, open pipe Harleys, etc), I guess it's "If you can't go fast, be annoying!" mentality
To me, cars that are faster than they sound are wayyyy cooler, I'm not talking at all about a 'Whoosh-mobile' sound, just a nice rumbly sound without all the extra decibels.
They perform pretty well too as tested here:
http://www.jr333.com/pontiac/exhaust.htm
yup, the 3" version is what I have in a 2 1/2-3" single exhaust app....
wise- do you have any resonance issues? I have a slightly annoying resonance with this setup and headers in my car at 1500-2000 rpm (street rpm's)
1976 Spinnaker White Plymouth Duster, /6 A833OD
1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: Quiet Muffler?
[Re: Streetwize]
#9940
01/14/04 12:04 PM
01/14/04 12:04 PM
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Joined: Jan 2003
Posts: 4,296
Chicago, IL
TonyS451
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master
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Chicago, IL
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I'm with Streetwize on the "faster than it sounds" way of thinking. I also use the Dynomax Hemi superturbo mufflers with a 3"in/2 1/2" out x pipe and 2 1/2" tailpipes on my 65 wagon with 440. The car still has a rumble to it, but more quiet than most street rods. A straight through design muffler will make a tiny bit more power, but they will blow your cover! I found a 1 mph gain going from superturbo muffs to Ultraflos (straight hrough design) on my Demon. I also use an x pipe: 3 1/2"to 3". The car is still stealthy with the Ultraflos, but was REALLY stealthy with the Superturbo's. Now I don't want to give the tenth back! 
2 kids and a dog
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Re: Quiet Muffler?
#9941
01/14/04 12:19 PM
01/14/04 12:19 PM
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Joined: Jan 2003
Posts: 1,064
los angeles ca.
70rtdroptop
super gas
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super gas
Joined: Jan 2003
Posts: 1,064
los angeles ca.
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accurate ltd hemi style. quiet but not . great for around town and cars that are drivin alot. my convertible was way to loud inside till i switched. can't wait to hear it with a new motor. soon ---
70 rt / 500 built my way
440 dana 60 disc brakes auto air power roof
tons of fun and lots of style
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Re: Quiet Muffler?
[Re: TonyS451]
#9942
01/14/04 12:20 PM
01/14/04 12:20 PM
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Joined: Jan 2003
Posts: 4,573
...gently down the stream
LAR_414
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master
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...gently down the stream
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Quote:
"faster than it sounds" way of thinking.
That's what I like as well. I tried to get mine really really quiet, but it's still a bit loud. Magnaflows are nice though, as well as the Dyno bullets I have. Hell I've got 4 muffs on this thing!  .....well maybe like 1 1/2 muffs on each side. 
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Re: Quiet Muffler?
#9944
01/14/04 01:23 PM
01/14/04 01:23 PM
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Joined: Jan 2003
Posts: 16,376
dogdays
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,376
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dBA in H2O muffler
95 0 open
90 58 SuperTrapp 18
81 86 Dynomax 17749
84 90 Borla
84 90 Cyclone Sonic Turbo
85 97 Thrush CVX
83 104 Dynomax 17734
90 118 Flowmaster 42550D
83 125 AP XLERATOR
89 125 Supertrapp 12
90 159 Flowmaster 42551H
78 312 stock replacement muffler, 2.5 inlet, 2.0 outlet,
. oval, offset inlet, lifetime warranty - 11.25 PSI back
. pressure
Back with data on the Dynomax 17749, I cannot stress enough that this is the muffler you want. Data from the oft-quoted Pontiac tests of a few years ago.
Lowest sound level (well, almost, the stocker was quieter) with quite low backpressure.
About $45 each the price won't kill you.
R.
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Re: Quiet Muffler?
[Re: dogdays]
#9945
01/14/04 02:07 PM
01/14/04 02:07 PM
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Anonymous
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Unregistered
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Anonymous
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Thanks for the info. I think I'm going to go with the Dynomax 17749 and the Summit X-pipe. I too want to be faster than I sound and I think I've got it backwards with the current set-up.
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