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#1797108 - 06/23/09 06:02 AM Difference between "Quiet Flow" & "Sound FX" Muffs
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
Looking at RockAuto there are 2 different mufflers available for the dual exhaust system...the "Quiet Flow" and the "Sound FX" models. What is the difference? Do both have the hangers welded on as they are advertised as stock replacements?

Anyone know off the top of their head the size of the bolts at the cat/h-pipe flanges?

Also, on a NPI motor CVLX is it really even worth it to step up to the dual exhaust? I mean, there are MANY higher performing/HP cars that have single exhaust systems.
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797158 - 06/23/09 08:33 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
John Hansen Offline
Rookie

Registered: 12/11/05
Posts: 54
Loc: Visalia, CA
I went with a junk yard PI system on my single exhaust 95 LX. It made a differance in better gas mileage and I picked up a few ponies. Still way to quite for me.
_________________________
2000 Crown Vic
1995 Ford Taurus
1977 Ford Ranchero GT
1966 Mustang with a warmed over 289
1964 F-100 with a 460
1931 Ford model A cabriolet with a 390 and 2x4s

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#1797195 - 06/23/09 10:02 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: John Hansen]
Chevyguy Offline

Poobah

Registered: 01/05/04
Posts: 9449
Loc: Winchester Mass
Cool

 Quote:
What is the difference between a Walker Quiet Flow, Sound FX and Pro Fit muffler?

A Walker Quiet Flow muffler is a 3 tubed design, premium muffler that is designed for O.E. equivalent sound and precision fit.

A Sound FX muffler is a 2 tube design muffler, with direct fit designs that are O.E. equivalent.

A Pro Fit muffler is a high quality universal fit muffler for installer shops and fabrication uses.



http://info.rockauto.com/Walker/Detail.html?128-673.jpg
So the Sound FX is more or less a Dynomax muffler welded up for direct fit. If those were available in 2006 I would have gotten those instead of the quiet flows.


Edited by Chevyguy (06/23/09 10:04 AM)
_________________________
2004 MarauderM79 155K miles Jmod!! Rockin Stock tune Daily, Muscle Merc tune for track 14.85 @95.63
2004 Crown Vic LX SOLD!!

New Daily 2016 Dodge Charger R/T Road and track, purchase with 16K now 23K after 3 months. 5.7 Hemi, 8 speed ZF trans 3.06 open rear 13.98 @ 99.2 mph 4740 lbs with driver!!

R.I.P Photobucket 10 years of hosting down the drain

Project car 74 Chevy Laguna type S-3, # match 400 SBC

Previous rides
93 P-71 2001 P-73, 94 TC Exec, 96 TC Signature, 04 LX

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#1797201 - 06/23/09 10:17 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: Chevyguy]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
So the SoundFX is basically a "turbo II" style muffler and it looks like the Quiet Flow model is the only one with the hangers welded on and of course the SoundFX model is what I would be wanting...

I just emailed RockAuto to see if they can tell me if the SoundFX mufflers have the hangers on them.

Since I have gone to the extent of doing the PI swap (as well as many other things) on the '98 Stang and the CV is my DD I won't bother doing the PI swap on it. Is it still worth doing the dual exhaust swap?
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797203 - 06/23/09 10:27 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
Chevyguy Offline

Poobah

Registered: 01/05/04
Posts: 9449
Loc: Winchester Mass
Good idea, in 2006 they listed a Dynomax option but had a notation Modificaion required etc..

It LOOKS like a direct fit but worth finding out for sure.
_________________________
2004 MarauderM79 155K miles Jmod!! Rockin Stock tune Daily, Muscle Merc tune for track 14.85 @95.63
2004 Crown Vic LX SOLD!!

New Daily 2016 Dodge Charger R/T Road and track, purchase with 16K now 23K after 3 months. 5.7 Hemi, 8 speed ZF trans 3.06 open rear 13.98 @ 99.2 mph 4740 lbs with driver!!

R.I.P Photobucket 10 years of hosting down the drain

Project car 74 Chevy Laguna type S-3, # match 400 SBC

Previous rides
93 P-71 2001 P-73, 94 TC Exec, 96 TC Signature, 04 LX

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#1797207 - 06/23/09 10:37 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: Chevyguy]
Chevyguy Offline

Poobah

Registered: 01/05/04
Posts: 9449
Loc: Winchester Mass
Can't find a decription for the part#

http://www.walkerexhaust.com/products/mufflers_soundfx.asp

This does show that they are making direct fit sound FX for certian applications. They should have no problem making a Crown Vic version since they have the jigs etc for the quiet flow version.



Edited by Chevyguy (06/23/09 10:39 AM)
_________________________
2004 MarauderM79 155K miles Jmod!! Rockin Stock tune Daily, Muscle Merc tune for track 14.85 @95.63
2004 Crown Vic LX SOLD!!

New Daily 2016 Dodge Charger R/T Road and track, purchase with 16K now 23K after 3 months. 5.7 Hemi, 8 speed ZF trans 3.06 open rear 13.98 @ 99.2 mph 4740 lbs with driver!!

R.I.P Photobucket 10 years of hosting down the drain

Project car 74 Chevy Laguna type S-3, # match 400 SBC

Previous rides
93 P-71 2001 P-73, 94 TC Exec, 96 TC Signature, 04 LX

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#1797217 - 06/23/09 11:13 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: Chevyguy]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
I went ahead and emailed Walker the same question...covering all my bases.
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797412 - 06/23/09 03:27 PM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
According to RockAuto the SoundFX muffs have the factory style hangers welded in place.
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797473 - 06/23/09 05:37 PM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
RoyalVic8 Offline
Banned
Over the Hill

Registered: 11/10/08
Posts: 3209
Loc: Lexington, SC
 Originally Posted By: modular
According to RockAuto the SoundFX muffs have the factory style hangers welded in place.


Kewall! I wonder how they sound since they aren't of "flowmaster" type. In my experience on various other V8 cars I've found flowmaster type mufflers to be quite free flowing and good sounding but louder and quieter at different points in the RPM range which I didn't like as much. The turbo type is a little quieter but much more consistent in sound throughout RPM.

Am I off base?
_________________________
98, P73, 13x,xxx, $20 Rustoleum Paint Job, 18" Cherry Bombs, '10 18" Mustang GT Rims w/Nero tires - already a bad ass but still a work in progress.




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#1797478 - 06/23/09 05:42 PM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: RoyalVic8]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
Nope, that has been my experience. I have the Flowmaster American Thunder cat-back with a cat-less h-pipe on the Mustang and it is loud. My CJ5 with the 304 V8 has dual Turbo II mufflers and it is nice and mellow but you can hear it.
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797863 - 06/24/09 06:39 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
Does anyone have the part numbers for the 2 hanger brackets and the corresponding bolts for the drivers side. I will need those and a local junk yard does not have them.

*EDIT* Disregard that question....I remembered the exhaust parts list in the P71 section.
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797937 - 06/24/09 10:20 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
modular Offline
Member

Registered: 04/14/09
Posts: 229
Loc: Loveland, Ohio
I can save almost $25 in shipping if I have RockAuto send the order to my business address.

Here is an oddball question...will all the pieces fit in the trunk of the CV so I can get them home???
_________________________

2000 CVLX-Walker SoundFX dual exhaust, P71 shocks, rear anti-sway bar, ARA3 ECM, AP103's, DDM HID's, Carroll Shelby Torq Thust M's w/Toyo Versado LX's, 35% tint.

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#1797979 - 06/24/09 11:41 AM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: modular]
knucklehead0202 Offline
Member

Registered: 10/23/08
Posts: 313
Loc: Southern California, U.S.A.
you can fit all that stuff PLUS a stroller and a bunch of guns. don't ask me how i know...
_________________________
1998 CV p71. 93,xxx miles now, still haven't got it painted.

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#1798009 - 06/24/09 12:13 PM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: knucklehead0202]
Chevyguy Offline

Poobah

Registered: 01/05/04
Posts: 9449
Loc: Winchester Mass
Yeah all that stuff fits in the Vic, I have my parts shipped to work too.

And big ++ on getting the hangers new, they are cheap and come with the new rubber hangers. I did not save much$$ pulling it out of a P-71 on my back. The bolts were a pia to get at with the bent pipes in the way.
_________________________
2004 MarauderM79 155K miles Jmod!! Rockin Stock tune Daily, Muscle Merc tune for track 14.85 @95.63
2004 Crown Vic LX SOLD!!

New Daily 2016 Dodge Charger R/T Road and track, purchase with 16K now 23K after 3 months. 5.7 Hemi, 8 speed ZF trans 3.06 open rear 13.98 @ 99.2 mph 4740 lbs with driver!!

R.I.P Photobucket 10 years of hosting down the drain

Project car 74 Chevy Laguna type S-3, # match 400 SBC

Previous rides
93 P-71 2001 P-73, 94 TC Exec, 96 TC Signature, 04 LX

Top
#1798014 - 06/24/09 12:18 PM Re: Difference between "Quiet Flow" & "Sound FX" Muffs [Re: Chevyguy]
RoyalVic8 Offline
Banned
Over the Hill

Registered: 11/10/08
Posts: 3209
Loc: Lexington, SC
So if you order this stuff from Rockauto you can bolt all this in yourself? A better question would be is all this "slip fit" and not in need of welding?
_________________________
98, P73, 13x,xxx, $20 Rustoleum Paint Job, 18" Cherry Bombs, '10 18" Mustang GT Rims w/Nero tires - already a bad ass but still a work in progress.




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