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Old 01-26-2014, 08:22 PM
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Gecko Gecko is offline
Dodge Ram Forum Senior Member
Join Date: Aug 2011
Location: New Jersey
Age: 27
Posts: 1,014
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Vehicle: 2004 Quad Cab
Trim Level: SLT 4x4
Color: Black
Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
Rep Power: 6
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The magnaflow, or any straight through design will be your best bet for performance. Doesn't matter how long or short the straight through design is. The shorter the magnaflow the louder it will be. The flowmasters are chambered and thats why they don't flow well.

If you're only doing a muffler swap though, you probably wont see much, if any, improvement in MPG or HP. You'd have to get a CAI and a tune to see the best results from that stuff.
Supercharged, cammed, other things too!
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