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I don't use a Banks but I'm getting about 1.3 mpg better overall using a Quadzilla standard. About .1-.2 better towing and more power available. I've kept hand calc'd records since the truck was new including before and after and the difference. You may get different results. Keep in mind you become your own warranty station with the installation of a chip. I think there has been several threads on this that may help also.
Skip
Skip and Mary
Black '04.5 Dodge 3500, CTD, 2x4, 48RE, LB, DRW, 3.73, LineX, AFE air filter, Donaldson muffler
'05 3500RL, TrailAir Pinbox
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