MagnaFlow vs. Flowmaster

[GAINMOB]

At a certain RPM range, usually a comfortable cruising speed for highway travel, the exhaust system will hit a certain frequency and will be quite loud.

Think Jim Carey in Dumb and Dumber. It's just a loud, constant, steady exhaust note that some find particularly annoying.

I've noticed that at higher RPMs...its quieter and at higher speeds...but i love the drone!!!

 

[98Sexpedition]

I've been using MagnaFlow for years, love the sound, the performance, and for the price compared to Flowmaster, you really cant go wrong. i'll never buy another brand exhaust.

 

[Expedition]

Magnaflow > Slowmaster

 

[GAINMOB]

i paid $150 single swept side...whats magnaflow running? who's performance is better?

 

[Expedition]

Magnaflow it's been dyno proven.

 

[tallsville]

here is a link to another forum that had some info on mufflers

http://www.titantalk.com/forums/tit...ng-muffler-pipe-cfm-ratings-dyno-numbers.html
Muffler Flow Testing

All tests via an independent lab
All tests @ 15” wc

2 “ Straight Pipe 283 CFM
2 ¼ “ Straight Pipe 365 CFM
2 ½ “ Straight Pipe 521 CFM

2 ¼” Typical Bent tailpipe 268 CFM
2 ½” Typical Bent Tailpipe 417 CFM

2 ¼” Inlet/Outlet_ Glass Pack Tips- No Louvers- Smooth 274 CFM
2 ¼” Inlet/Outlet- Glass Pack Tips-Louvered 133 CFM
Same as above set for reverse flow 141 CFM
2 ¼” Cherry Bomb 239 CFM
2 ½” Cherry Bomb 294 CFM

2 ½” Inlet/Outlet Dynomax Super Turbo 278 CFM
2 ½” Inlet/Outlet Ultraflow Bullet 512 CFM
2 ½” Inlet/Outlet Gibson Superflow 267 CFM
2 ½” Inlet/Outlet Flowmaster ( 2 Chamber) 249 CFM
2 ½” Inlet Outlet Flowmaster ( 3 Chamber) 229 CFM
2 ¼” Inlet/Outlet Thrush CVX 260 CFM
2 ½” Inlet/Outlet Maremount Cherry Bomb 298 CFM
2 ½” Inlet/Outlet ****** Aero Chamber 324 CFM
2 ½” Inlet/Outlet ****** Max Flow 521 CFM
2 ½” Inlet/Outlet Borla Turbo 373 CFM
2 1/2" Inlet/Outlet Magnaflow 284 CFM

Standard OEM 2 ¼” Inlet/Outlet 138-152 CFM
Standard OEM 2 ½” Inlet/Outlet 161-197 CFM

.................................................. .........................................

This test was performed by 5.0 Mustang & Super Fords Magazine, December 2002 issue (page 55) on a '90 Mustang LX coupe with 370hp and 11 second potential. 66 pulls were made for this comparison:

The results in HP order:
1.Flowtech Warlock (open) 374.2 hp/ 333.1 tq
2.Bassani Real Street 373.7 hp/ 333.8 tq
3.****** Maxflow 373.5 hp/ 333 tq
4.Borla XS 373.3 hp/ 332.6 tq
5.Magnaflow 372.8 / 332.5 tq
6.MAC 372.3 hp / 331.5 tq
7.Flowtech Afterburner 372.3 hp/ 330.1 tq
8.****** Aerochamber 372.1 hp/ 330.4 tq
9.Bassani 372 hp/ 333.5 tq
10.Spintech 371.6 hp/ 332.2 tq
11.Edelbrock Performer RPM 370.9 hp / 331.3 tq
12.Borla XR1 370 hp/ 334 tq
13.Flowtech Terminator 369.5 hp / 331.3 tq
14.Dynomax Ultra Flo 369.4 / 333.2 tq
15.Flowmaster 369.4 hp / 331.8 tq
16.Flowtech Warlock 366.3 hp / 325.3 tq
17.No muffs 365.2 hp / 330.1 tq
.................................................. .....................................

Sound Off in Quietest to Loudest (Decibels):
1.Borla XS, 80db at idle, 90db at 2,000 rpm, 110db at WOT.
2.****** 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.****** 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).

and this is the link to the article he is talking about

http://www.mustang50magazine.com/te...rd_mustang_muffler_comparison_test/index.html

here are some more numbers

http://www.stangnet.com/mustang-forums/576535-spintech-flowmaster.html

All muffler flow ratings are with a 2 1/2" offset inlet/offset outlet and measured at 28" H2O


Here goes:


3" Straight Pipe 705 CFM

2 1/2" Straight Pipe 485 CFM

Pypes Violator 453 CFM (louder than the Race-Pro)

Pypes Race-Pro 453 CFM

Magnaflow 436 CFM

SpinTech Pro Street 427 CFM

Borla 427 CFM (not stingers)

SpinTech Sportsman Street 402 CFM

SpinTech Truck/RV 391 CFM

Pypes Street-Pro 349 CFM

DynoMax Super Turbo 344 CFM

****** Aero Chamber 344 CFM

DynoMax Turbo 320 CFM

Flowmaster 40 series 273 CFM

Flowmaster 50 series 213 CFM (Jesus these things suck...)

For every 2.2CFM, 1 horsepower is restricted or unrestricted. That means it takes 880CFM (440x2 mufflers = 880cfm) of flow to support 400whp. Of course that is an approximation, it's not an exact science but is a pretty close estimate.

Sound Levels

No Mufflers - 91db@Idle - 103db@2000RPM - 120db@WOT

SpinTech ProStreet - 87db@Idle - 97db@2000RPM - 116@WOT

****** Aerochamber - 87db@Idle - 94db@2000RPM - 114db@WOT

Flowmaster - 82db@Idle - 93db@2000RPM - 115db@WOT

Magnaflow - 82db@Idle - 91db@2000RPM - 114db@WOT

 

[Daytoman]

I had dual Magna flows on my 06 F150..I have a single 40 series Flowmaster on my 04 Expo...

I couldnt tell you any difference..They actually sound the same....F150 was a bit louder cause of the duals. But overall sound is very close.

When I asked the the guy at the muffler shop what Flowmaster to get he just asked me....on a scale of 1-10 on loudness, what would I want? I said 5 or 6..he put on the 40 series.. PERFECT.

A little drone on the highway but I dont care...the Magnas had the same drone.

I think it just boils down to what sound you want basically. The guy at the muffler shop made it easy. LOL!

I had Dynomax on my 99 F150...I didnt like them at all...they were duals.

 

[eldercaddy]

Whats the big difference between the two?

I see alot of people running both so what is their hype?

I am debating the following outcomes:

I had a flowmaster 40 series (dual chamber) and I switched to a magnaflow. The flowmaster was louder and I felt like I lost some low end torque. The magnaflow is fairly quiet and it felt like it restored the low end torque. The flowmaster may give more hp, but just all around driving I'll take the magnaflow anyday. And I think I will use Magnaflow for a long long time.

 

[cloudywater]

Posted by liftedjenz - magnaflow exhausts

magnaflow had an insanely hot chick at the sema show this year. She was supposedly one of the breifcase models from deal or no deal.

I have been looking at this on the magnaflow website and can not seem to find any vids. Anyone know where I can find a clip.

 

[99 Expy]

I don't have experience with either, but I love the sound of my straight pipe with 2 1/4 inch pipe, I don't notice it at all on the road unless my radio is off and you don't have to pay for a muffler