Flowmaster or Magnaflow?
Technical Article Contributor
Joined: Dec 2006
Posts: 1,584
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From: Sask. Canada
Originally Posted by MmmBuckles
ya. those cars have twice the hp. a muffler isn't going to make a difference for them.oh, and they are cars, not trucks. i have a flowmaster and a cutout. my truck runs alot better and quicker with the cutout open. the Slowmaster is deff. making it slower. i would listen to Built, he has had more exhaust set ups than anyone on this site. and he knows what he is talking about when it comes to being fast or slow.
Over your stock muffler you aren't gonna really gain anything or lose anything with the flowmaster as it has baffles in it restricting air flow. In alot of cases it may free up power but in some there is no real difference. the magnaflow will typically see small gains as it is a straight through design not really restricting air flow all that much.
Senior Member
Joined: Jun 2006
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From: Huntsville/Cypress, TX
Originally Posted by Gotts2BMe
I think you should re-read my post.......
now lets post a dyno with the stock muffler as well on the same vehicle
now lets post a dyno with the stock muffler as well on the same vehicle
Technical Article Contributor
Joined: Dec 2006
Posts: 1,584
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From: Sask. Canada
Originally Posted by MmmBuckles
i see what you mean. but still you are still going to see a difference
Senior Member
Joined: Jun 2006
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From: Huntsville/Cypress, TX
Originally Posted by built54
you wont feel it, but taking off from a dead stop, you WILL feel it, trust me, im on setup #21, I Have had everything, and I know how they all acted.
Senior Member
Joined: Oct 2007
Posts: 579
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From: Buffalo, NY
i have had magnaflow and ive had flowmaster. Personally i like flowmaster, but you can put a tractor muffler on for all it matters. Bottom line, its your truck and you pay the bills, so do what you want/ like and dont worry about HP and track times unless your truck will ever see a drag strip.
but if you want sound, i just put on a super 44 from flowmaster, check the exaust forum for the thread.
but if you want sound, i just put on a super 44 from flowmaster, check the exaust forum for the thread.
Senior Member
Joined: Aug 2007
Posts: 168
Likes: 1
From: Wisconsin
As a former Flowmaster owner, I can honestly say one thing:
BUY MAGNAFLOW!!!
I just added a 14" SI/DO with two high flow Magnaflow cats and the setup is far better performing than the 40 Series Flowmaster. The 14" gives you a more aggressive exhaust tone than a 40 Series, but it does not drone nearly as bad in the cab. If you want aggressive sound and the performance to boot, Magnaflow is the way to go!
BUY MAGNAFLOW!!!
I just added a 14" SI/DO with two high flow Magnaflow cats and the setup is far better performing than the 40 Series Flowmaster. The 14" gives you a more aggressive exhaust tone than a 40 Series, but it does not drone nearly as bad in the cab. If you want aggressive sound and the performance to boot, Magnaflow is the way to go!