Quietest muffler you can have

[Kornnut]

Maybe not tech here, but I really want a quite muffler on my car. Right now I have mac pro dumps with an o/r h pipe. Now the catch is I want to keep the mid pipe thats on the car. What muffler out there is really tame sounding?

 

[deftsound]

dynomax ultra-flo's are pretty quiet, so are magnaflows

 

[ford302redneck]

Well with a o/r h pipe, nothing is going to be really really quiet.

Maybe try the Flowmaster Force IIs, they aren't supposedly as loud.

 

[Gearbanger 101]

I have a complete magnaflow system on my car and although it's quite at idle and cruise, it's still pretty loud under moderate and full throttle acceleration. Borla XL mufflers are probably about the quietest you're going to find.

 

[Kornnut]

dynomax ultra-flo's are pretty quiet, so are magnaflows

Thats what I have found so far. My bias agaist magnaflows are leading me towards the dynomax. I may have to eat my words though lol.

I have a complete magnaflow system on my car and although it's quite at idle and cruise, it's still pretty loud under moderate and full throttle acceleration. Borla XL mufflers are probably about the quietest you're going to find.

Do you have any sound clips of your magna flows? Do you know where I can find some clips of the borla?

 

[Gearbanger 101]

Do you have any sound clips of your magna flows? Do you know where I can find some clips of the borla?

Not a Mustang, but keep in mind this is through 3-mufflers and two high flow cats. A little tough to hear over the blower when you're in front of the car, but you get the idea at idle in the fist video and after half track in the second.


View attachment 330784 View attachment 330785

I'm not sure off hand where there are any sound clips of the Borla set up, but unlike other mufflers absolutely EVERYONE i've ever heard talk about the Borla systems has the same opinion. Just slightly lounder than stock.

 

[Mustangless]

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

 

[95BlueStallion]

Sound Off in Quietest to Loudest (Decibels):

1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.Hooker Maxflow, 80db at idle, 90db at 2,000 rpm, 120db at WOT.
3.Magnaflow, 82db at idle, 91 at 2,000 rpm, 114db at WOT.
4.Flowmaster, 82db at idle, 93 at 2,000 rpm, 115db at WOT.
5.Flowtech Warlock, 83db at idle, 92 at 2,000 rpm, 112db at WOT.
6.Dynomax UltraFlo, 83db at idle, 94 at 2,000 rpm, 113db at WOT.
7.Borla XR1, 83db at idle, 96db at 2,000 rpm, 118db at WOT.
8.Bassani Street, 83db at idle, 96db at 2,000 rpm, 120db at WOT.
9.Edelbrock RPM, 84db at idle, 93db at 2,000 rpm, 118db at WOT.
10.Bassani Real Street, 84db at idle, 96db at 2,000 rpm, MAX. (120+db).
11.Flowtech Afterburner, 86db at idle, 94db at 2,000 rpm, 115db at WOT.
12.Flowtech Terminator, 86db at idle, 94db at 2,000 rpm, 119db at WOT.
13.Hooker Aerochamber, 87db at idle, 94db at 2,000 rpm, 114db at WOT.
14.SpinTech, 87db at idle, 97db at 2,000 rpm, 116db at WOT.
15.MAC, 87db at idle, 98db at 2,000 rpm, 119db at WOT.
16.No Muffler, 91db at idle, 103db at 2,000 rpm, MAX. (120+db).

I guess that pretty much sums up this thread...

 

[final5-0]

Well with a o/r h pipe, nothing is going to be really really quiet.

Yes

No cats really does increase the db levels :Word:

I got an OEM catback and it is W A Y more louder since I went to the sig combo
so
Said that to show more power behind any muffler is gonna make more noise

btw ... before the sig combo I had ported E7's and a few bolt ons
but
I did have cats and the same catback

I knew the increased power would increase the db level
but
I was in no way expecting the amount it did increase

Grady

 

[mo_dingo]

yeah I thought that there was a sticky on this topic. I think the magnaflow will be the quietest and best sounding IMO. I love my setup.

 

[Pokageek]

Dyno max SUPER TURBO is not on the list. They are MUCH quieter than ultra. They are THE QUIETEST and you keep your HP.

 

[PUNISHER RACING]

+1 on the Dynomax Super Turbo's, quiet and good flowing

 

[fiveohh94gt]

i have those hooker maxflows and love them, they're quiet idling and cruising, but they scream when you step on go pedal

 

[95WhiteVenom]

I used to have the Borla XR-1's on my cobra and with an offroad x-pipe you had to get the car over 3500 RPM's to actually hear the car. They got a lil louder when I added the prochamber, but still very quiet none the less. I sold my set of them a few years back. Seems weird I went from that quiet system to now having the prochamber still and adding SLP Loudmouth I system which is now hacked into turndowns and the car literally wakes up the entire neighborhood.

 

[Zero Signal]

I don't understand why you want to limit yourself to keeping the current midpipe. Why not just get some high flow cats? That will quiet it up nicely and cost about the same as a new cat-back setup.

 

[northy_polk]

I think a 1993 Escort station wagon would be quieter on the exhaust end of things ;-) It's actually a great little car...

But seriously +1 on the high flow cats. You could even have some welded in to your current setup, which is a cheap option if you can weld or know someone who can. Pypes sells them individually as do others I'm sure w/the correct inlet/outlet diameters.

 

[The O.G.]

i have dynomax superturbos they are quite, i have off road h, tfs top end

they are cheap also !

i think the quality is they are being removed although in good shape

not welded mufflers
i think they are pressed in at the ends

 

[dartvader]

Borla XS with longtubes here, notice you can hear the engine more than the exhaust....

http://[URL=http://s231.photobucket.com/albums/ee161/1intesity25/?action=view&current=mustangidle001.flv] View attachment 330575 [/URL]

 

[Kornnut]

Dyno max SUPER TURBO is not on the list. They are MUCH quieter than ultra. They are THE QUIETEST and you keep your HP.

+1 on the Dynomax Super Turbo's, quiet and good flowing

These are what I am looking at. Pretty sure this is what I will go with.

I used to have the Borla XR-1's on my cobra and with an offroad x-pipe you had to get the car over 3500 RPM's to actually hear the car. They got a lil louder when I added the prochamber, but still very quiet none the less. I sold my set of them a few years back. Seems weird I went from that quiet system to now having the prochamber still and adding SLP Loudmouth I system which is now hacked into turndowns and the car literally wakes up the entire neighborhood.

I had slp LM1 dumped on the car before. Got to where I hated it. I also have slp LM1 on my 02 gt. Loud as sin.

I don't understand why you want to limit yourself to keeping the current midpipe. Why not just get some high flow cats? That will quiet it up nicely and cost about the same as a new cat-back setup.

Weld in mufflers will be cheaper then cats.

I think a 1993 Escort station wagon would be quieter on the exhaust end of things ;-) It's actually a great little car...

But seriously +1 on the high flow cats. You could even have some welded in to your current setup, which is a cheap option if you can weld or know someone who can. Pypes sells them individually as do others I'm sure w/the correct inlet/outlet diameters.

I don't want to hack up a mid pipe. If I was to put cats back on the car I would just use my factory mid pipe.

 

[final5-0]

The OEM mid pipe has got to be a bunch more restrictive than an after
market catted high flow mid pipe

Grady