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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #1  
Old 08-07-2010, 09:39 PM
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Default Magna VS Flow - Bottome line?

Ok, I'm going nutz!
I'm days away from buying a dual exhaust and doable programmer but consistently get mixed reviews between magnaflows and flowmaster! Soon as I'm convinced someone changes my mind!! I'm told flowmasters will last longer n sound/performance won't change. Then I'm told magnaflows sound/performance will eventually deteriorate and that's NOT covered under their warranty. I've heard magnas add more performance and haven't heard this about flows. Also and a biggy is price, the magna flows are like $900 and the flows are $500.. I can go on and on about this, I just want the BEST bang for my buck and want to know it's not something temporary!! Help?!!??!?
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Old 08-07-2010, 09:51 PM
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You are going to get mixed results because everyone has their own experiences with each brand.

So I'll reiterate mine:

Flowmaster sound and performance will change. I've run Flows on several vehicles and each set was run for at least 60K miles, one over 120K miles. The set I had the longest on a car did get louder and the inside of the mufflers started to come apart.

All systems have warranty exclusions. I have not tried to collect on the warranty of either manufacturer.

I have never compared the two systems side by side on a dyno comparision with the same vehicle.

I'm not sure what you are pricing (a full catback system?) but I can tell you I did my truck with a new single in /dual out muffler and new pipes for a little over $400 at a local shop this past January.

Define temporary. 20K miles? 3 years? A million miles? Exhaust systems, like any other part, will wear over time. It's all temporary. The question is, which manufacturer will give best service over time and mileage. I'd say it's a tossup.

Ya know what it really boils down to? The sound. Buy the one that sounds the best to you and don't get confused by all the rhetoric on the subject.
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Old 08-08-2010, 12:50 AM
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I have run both flows and mags on my truck...I think at idle and part throttle the flows sound more muscular. But at wot the sound breaks up and it kinda sounds odd. The magnaflows sound much better at wot, is more quiet in the cab (but you still hear an feel the muscular tone) and performs better then the flows (based on track experience)... 5 quickest na qcs (none of them run flows..a couple of them use to but not when they were quick)
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Old 08-08-2010, 12:53 AM
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and I don't know where you gettin your exhaust from but if you go to a small independent muffler shop...you can get a whole cat back system that includes tips for around $250 (at least i did...when I did flows or magnaflow)
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Old 08-08-2010, 03:43 PM
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Default

Very valid point about the exhaust wearing like any other part over time! Never stopped to think of it that way! Im pricing out a set of Magnaflows now on ebay for $600. Its cat back kit dual split rear exit. Im going to go with Magnaflow. Ive heard better things and its advertised better too. Just costs a little more.. Wish i could get it out the rear at the sides though..
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Old 08-08-2010, 03:48 PM
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A little work at the muffler shop can alter the exit to the sides for very little money.
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Old 08-08-2010, 04:14 PM
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..go visit a muffler shop (a small one)..they can do anything you want (even if you think it can't be done) and you'll be surprised how much cheaper it is to go that route as opposed to a full exhaust kit...
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Old 08-08-2010, 04:59 PM
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I second that! I got my full system done, cat back, for a great price.

I couldn't have bought a full catback online for the price I paid the local shop.
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Old 08-09-2010, 01:39 PM
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If getting the work done 'locally', be sure to inquire if they use stainless or aluminized steel pipe.
Most shops who bend pipe use the later, and it's a whole lot less $$$ than a stainless set up.
Nothing 'wrong' with aluminized, but it will rust/rust out over time.

Your OEM system is stainless.
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Old 08-09-2010, 03:02 PM
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Hooker Aerochamber outflows them both if I remember correctly. But Magnaflow definitely outflows the Flow. I think even Thrush outflows the Flow. Dynomax has some monster air-flow rates as well.
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