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Old 11-12-2012, 10:46 AM
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Scotty85 Scotty85 is offline
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Join Date: Jun 2012
Age: 43
Posts: 203
Gender: Male
Vehicle: 2012 Dodge Ram
Trim Level: Sport
Color: True Blue Pearlcoat
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
Rep Power: 3
Rep:79
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Having drag raced Mopars for years, I can assure you that you can definitely have too much exhaust. It doesn't surprise me that you lost low-end power when going to a larger, more free-flowing exhaust. You will almost always lose bottom-end torque. Engines do require some back-pressure based on the rest of the combo in order to have enough scavenging for proper combustion. The only way around that is if you have the heads/intake/cam to make up for it. You could always add a higher-stall TC to try and make up for the loss in the bottom-end. The higher stall would get you up in RPMs past where you're losing the torque.

Throw a set of 3" true-duals from the heads back and remove the cats, regardless of which muffler. See how much bottom-end you have then. It'd just lay over and wanna die.

Scott
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