Magnaflow OR Flowmaster???
Joined: Dec 2004
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From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Re: Magnaflow OR Flowmaster???

ton of threads already out there like this
But in a nutshell. Some love flowmasters, others hate them and like the magnaflow.
Can get magnaflow in stainless.
Claim magnaflow flows better then flowmaster.
In the end, listen to sound clips of both and pick what YOU like best.
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Joined: Feb 2009
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From: NY
Car: Trans Am, Corvette
Engine: LB9, LT1
Transmission: 700R4, 4L60
Axle/Gears: 373, 259
Re: Magnaflow OR Flowmaster???
Magnaflow FTW..
Stainless Steel.
Flows way better than Rustmaster.
Sound just as good, if not better, But thats just prefernce of course.
Lighter too.
Stainless Steel.
Flows way better than Rustmaster.
Sound just as good, if not better, But thats just prefernce of course.
Lighter too.
Joined: Dec 2004
Posts: 2,042
Likes: 18
From: Lincolnton, NC
Car: 88 IROC
Engine: 97 5.7 Vortec LT4 hotcam
Transmission: 700 r4
Axle/Gears: 3.73
Re: Magnaflow OR Flowmaster???
forgot to add my opinion.
I dont like the sound of the magnaflows. I've got the 80 series Flowmaster and I am happy with the sound of it.
I dont like the sound of the magnaflows. I've got the 80 series Flowmaster and I am happy with the sound of it.
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From: Northern, CA
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
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Re: Magnaflow OR Flowmaster???
If you type into Google = "Youtube,flowmaster,duel, camaro." you will get a few sound clips to listen to. You can do the same with "Youtube,Magnaflow,duel,camaro." I have listened to many on there. Sound quality can be a little off but you get the basic tone. By the way I have the 3 in. American Thunder Flowmaster "80 Series" cat back with a high flow Magnaflow cat and I really like it . Seems to sound better and better every day.
Last edited by Ron U.S.M.C.; Jun 2, 2010 at 07:07 PM. Reason: add info.
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Re: Magnaflow OR Flowmaster???
I looked through a magnaflow today and my eyeball superflow bench said it liked it seriosly i like the idea of the straight through design of the magnaflow over the flowmaster for performance but u may prefer the sound of the flowmaster Member
Joined: Feb 2009
Posts: 169
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From: NY
Car: Trans Am, Corvette
Engine: LB9, LT1
Transmission: 700R4, 4L60
Axle/Gears: 373, 259
Re: Magnaflow OR Flowmaster???
Magnaflow is better than flowmaster any way you cut it. Only reason to go with Blowmaster would be if youre after there sound. Thats it though. If you prefer performance and durability go Magnflow or Borla or Corsa.
Joined: Sep 1999
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From: Danville, IN
Car: 1991 Camaro Z28
Engine: LS1
Transmission: 4L60E
Axle/Gears: Strange 12 Bolt, 3.42
Re: Magnaflow OR Flowmaster???
I just bought a set of magnaflow mufflers for my dual exhaust but haven't get them welded on yet. I had a set of the older straight through edelbrock mufflers but one cracked, I really liked those mufflers too but they don't make them anymore. I'm running true dual 3in dumped before the rear axle using this muffler. Heres the one I'm using. I would get center in/out if you are dumping before the rear axle.
http://www.jegs.com/i/Magnaflow/642/...oductId=751042
Junior Member
Joined: May 2009
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From: Maryland
Car: 1990 Camaro RS
Engine: 305 V8 5.0
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Re: Magnaflow OR Flowmaster???
Magnaflow sounds amazing my PERSONAL opinion the magnaflowsa are a little deeper but i agree with them its personal preference
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Re: Magnaflow OR Flowmaster???
depends on what you want. if your going to go magnaflow id go with dynomax instead they are supposed to flow
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Joined: Mar 2007
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From: Muscatine IA
Car: 91 Firebird Formula
Engine: 383
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Re: Magnaflow OR Flowmaster???
flowmaster for the win. magnaflows sound good but my ears just like the flowmaster sound better. seem to kackel more on decel and sound great with a cam
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