Pypes Pipe Bomb or Flowmaster Outlaw Axle Back - Ford Mustang Forum
 
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post #1 of 10 (permalink) Old 01-15-2016 Thread Starter
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Pypes Pipe Bomb or Flowmaster Outlaw Axle Back

Had a 2010 GT that I liked the sound of the stock exhaust. I have had my 2015 GT for 7 months and thinking it is not as loud as my 2010. I am considering Pypes pipe bomb axle backs or Flowmaster Outlaw. My cruising rpm is generally between 1800 and 2200 rpm. I would like to know if anyone who has either of these setups can tell me if that range will create a resonance or drone.

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post #2 of 10 (permalink) Old 01-15-2016
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my car is a 2012 gt, with Pypes exhaust set up. got my car this way.. there loud but at highway speeds or a steady speed like that I find them fine.. just a light growl if the radio is off, if you turn the music on I don't notice the car much it's really great I think. But when you get on the car it's Very addicting sound

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post #3 of 10 (permalink) Old 01-16-2016
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I have the Outlaws.I like the sound,it is loud though.There is a bit of drone at low rpms in drive if you lug it a bit and gently accelerate.In Sport mode,my usual, it doesnt drone at all.

'13 GT500,'15 Mustang GT
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post #4 of 10 (permalink) Old 01-16-2016
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I had Pypes Violators installed on my '06GT. I usually get a light drone between 1600 - 1800 RPM, past that or if I step on it, then it will rumble/growl.
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post #5 of 10 (permalink) Old 01-18-2016 Thread Starter
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Quote:
Originally Posted by rideflstn View Post
I have the Outlaws.I like the sound,it is loud though.There is a bit of drone at low rpms in drive if you lug it a bit and gently accelerate.In Sport mode,my usual, it doesnt drone at all.
I don't know why the mode should make a difference. Do you know why?
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post #6 of 10 (permalink) Old 01-19-2016
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It wont lug the motor.It will keep you in the power band.

'13 GT500,'15 Mustang GT
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post #7 of 10 (permalink) Old 01-19-2016
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as far as Pypes & FM,, you are looking at some of the poorest quality, flowing, etc. components on the market IMHO......


On the net, please read:

broaderperformance.com/muffler_flow_tests.htm (Independently tested cfm flows of the more popular mufflers, glasspacks and resonators @ 15” wc:

2 ” diameter straight pipe 521
2 ” diameter straight pipe 365
2” diameter straight pipe 283
2 ” diameter tailpipe 268
2 ” round glasspack- no louvers 274
2 ” round glasspack- with inward punched louvers 133
2 ” round glasspack- inward punched louvers/installed backwards 141
2 ” inlet/outlet Dynomax SuperTurbo 268
2 1/4” inlet/outlet Thrush CVX 260
2 ” inlet/outlet Flowmaster 2-chamber 249
2 ” inlet/2 ”outlet Cherry Bomb turbo 249
2 ” inlet/outlet Flowmaster 3-chamber 229
2 ” inlet/2 ”outlet Maremount Super C (OEM Replacement) 149
2 ” inlet/2” dual outlet Maremount 183
2 ” inlet/outlet California Turbo 229
2 ” inlet/outlet Hooker Aerochamber 324
2 ” inlet/outlet Hooker MaxFlow 521
2 ” inlet/outlet Maremount Cherrybomb Vortex 298
2 ” inlet center/outlet offset Borla Turbo 373


http://www.popularhotrodding.com/eng...../index1.html (this is an in-depth article that tests not only the mis-conception of flow demand but also how placement of a muffler (a glass pack in this dyno test) can actually "fool " the system into thinking that it is essentially a straight pipe.


I have listed here a muffler shootout test done by CAR CRAFT:

The Mufflers
MAKE MODEL
Part No.
SUMMIT Turbo 630125
THRUSH Magnum Glasspack 24214
THRUSH Boss Turbo 17718
HOOKER Competition 21006
DYNOMAX Super Turbo 17733
DYNOMAX Race Magnum 24215
HOOKER Super Competition 21106
SUMMIT Fully Welded 630325
FLOWTECH Afterburner 50322

MUFFLER FLOW TEST

MUFFLER Flow at 28-in H20
DynoMax Race Magnum 528.64 cfm
Thrush Magnum Glasspack 507.40 cfm
Summit Fully Welded 343.38 cfm
Flowtech Afterburner 342.20 cfm
DynoMax Super Turbo 333.94 cfm
Hooker Competition 232.46 cfm
Hooker Super Competition 320.96 cfm
Summit Turbo 331.16 cfm
Thrush Boss Turbo 297.36 cfm

MUFFLER Idle dB WOT dB
DynoMax Super Turbo 89 123
DynoMax Race Magnum 94 133
Flowtech Afterburner 92 124
Hooker Competion 92 122
Hooker Super Competion 90 125
Summit Turbo 89 124
Summit Fully Welded 92 125
Thrush Boss Turbo 90 123
Thrush Magnum Glasspack 92 128

DYNO TEST
All mufflers were dyno-tested on a 355-cube SBC with 10.0:1 compression, Air Flow Research 190 aluminum heads, a CompCams 292 hyd. a Victor Jr. intake, a Holley 750-cfm double-pumper, and 1 5/8 Headman headers.


MUFFLER HP TORQUE 2,500-6,000rpmAverage
Hooker Competition 397.4 381.1 286.8hp/351.9 lb-ft
Thrush Boss Turbo 407.1 384.9 292.1 hp/357.5 lb-ft
DynoMax Race Magnum 409.5 394.3 298.8 hp/366.9 lb-ft
Flowtech Afterburner 409.7 391.2 294.8 hp/361.7 lb-ft
Thrush Glasspack 409.5 389.8 297.7 hp/365.3 lb-ft
Summit Turbo 411.5 386.3 291.5 hp/357.4 lb-ft
DynoMax Super Turbo 412.7 387.2 292.6 hp/358.6 lb-ft
Hooker Super Comp 413.8 387.2 292.8 hp/359.0 lb-ft
Summit Fully Welded 415.4 390.7 295.6 hp/362.4 lb-ft

While there are mufflers that will out flow a glass pack design, it also depends on the design. Does the glasspack use "louvers or perforations" - Louvers reduce the flow by as much as 50% but Allied resonators (that sell for $40 or so) each and available at any muffler shop) installed in independent test flowed 90%+ of a "race spec muffler". Others using other brands consistently showed similar results.

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post #8 of 10 (permalink) Old 01-20-2016
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Quote:
Originally Posted by Beechkid View Post
as far as Pypes & FM,, you are looking at some of the poorest quality, flowing, etc. components on the market IMHO......


On the net, please read:

broaderperformance.com/muffler_flow_tests.htm (Independently tested cfm flows of the more popular mufflers, glasspacks and resonators @ 15” wc:

2 ” diameter straight pipe 521
2 ” diameter straight pipe 365
2” diameter straight pipe 283
2 ” diameter tailpipe 268
2 ” round glasspack- no louvers 274
2 ” round glasspack- with inward punched louvers 133
2 ” round glasspack- inward punched louvers/installed backwards 141
2 ” inlet/outlet Dynomax SuperTurbo 268
2 1/4” inlet/outlet Thrush CVX 260
2 ” inlet/outlet Flowmaster 2-chamber 249
2 ” inlet/2 ”outlet Cherry Bomb turbo 249
2 ” inlet/outlet Flowmaster 3-chamber 229
2 ” inlet/2 ”outlet Maremount Super C (OEM Replacement) 149
2 ” inlet/2” dual outlet Maremount 183
2 ” inlet/outlet California Turbo 229
2 ” inlet/outlet Hooker Aerochamber 324
2 ” inlet/outlet Hooker MaxFlow 521
2 ” inlet/outlet Maremount Cherrybomb Vortex 298
2 ” inlet center/outlet offset Borla Turbo 373


http://www.popularhotrodding.com/eng...../index1.html (this is an in-depth article that tests not only the mis-conception of flow demand but also how placement of a muffler (a glass pack in this dyno test) can actually "fool " the system into thinking that it is essentially a straight pipe.


I have listed here a muffler shootout test done by CAR CRAFT:

The Mufflers
MAKE MODEL
Part No.
SUMMIT Turbo 630125
THRUSH Magnum Glasspack 24214
THRUSH Boss Turbo 17718
HOOKER Competition 21006
DYNOMAX Super Turbo 17733
DYNOMAX Race Magnum 24215
HOOKER Super Competition 21106
SUMMIT Fully Welded 630325
FLOWTECH Afterburner 50322

MUFFLER FLOW TEST

MUFFLER Flow at 28-in H20
DynoMax Race Magnum 528.64 cfm
Thrush Magnum Glasspack 507.40 cfm
Summit Fully Welded 343.38 cfm
Flowtech Afterburner 342.20 cfm
DynoMax Super Turbo 333.94 cfm
Hooker Competition 232.46 cfm
Hooker Super Competition 320.96 cfm
Summit Turbo 331.16 cfm
Thrush Boss Turbo 297.36 cfm

MUFFLER Idle dB WOT dB
DynoMax Super Turbo 89 123
DynoMax Race Magnum 94 133
Flowtech Afterburner 92 124
Hooker Competion 92 122
Hooker Super Competion 90 125
Summit Turbo 89 124
Summit Fully Welded 92 125
Thrush Boss Turbo 90 123
Thrush Magnum Glasspack 92 128

DYNO TEST
All mufflers were dyno-tested on a 355-cube SBC with 10.0:1 compression, Air Flow Research 190 aluminum heads, a CompCams 292 hyd. a Victor Jr. intake, a Holley 750-cfm double-pumper, and 1 5/8 Headman headers.


MUFFLER HP TORQUE 2,500-6,000rpmAverage
Hooker Competition 397.4 381.1 286.8hp/351.9 lb-ft
Thrush Boss Turbo 407.1 384.9 292.1 hp/357.5 lb-ft
DynoMax Race Magnum 409.5 394.3 298.8 hp/366.9 lb-ft
Flowtech Afterburner 409.7 391.2 294.8 hp/361.7 lb-ft
Thrush Glasspack 409.5 389.8 297.7 hp/365.3 lb-ft
Summit Turbo 411.5 386.3 291.5 hp/357.4 lb-ft
DynoMax Super Turbo 412.7 387.2 292.6 hp/358.6 lb-ft
Hooker Super Comp 413.8 387.2 292.8 hp/359.0 lb-ft
Summit Fully Welded 415.4 390.7 295.6 hp/362.4 lb-ft

While there are mufflers that will out flow a glass pack design, it also depends on the design. Does the glasspack use "louvers or perforations" - Louvers reduce the flow by as much as 50% but Allied resonators (that sell for $40 or so) each and available at any muffler shop) installed in independent test flowed 90%+ of a "race spec muffler". Others using other brands consistently showed similar results.
I dont know about the Pypes but the flowmaster Outlaw has a larger I.D. tube than stock.It has a muffler that is straight thru and smaller than a motorcycle muffler. Wheres the Decreased flow?

'13 GT500,'15 Mustang GT
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post #9 of 10 (permalink) Old 01-20-2016
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.....it is an overpriced glasspack muffler and mfg by Allied industries...you can pick up an Allied "resonator" for about 1/2 the price (typically $40 each) at any muffler shop nationwide.

:hello:
Member: Never trust a person over 40 who drives a Chevy club
Flatheads ain't so bad!
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post #10 of 10 (permalink) Old 01-26-2016 Thread Starter
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Thanks for all the replies. After doing some more research I am also considering Kooks axle back. Any reports on those would be appreciated.
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