Hi guys. Im not here to start any arguments or competition from one user to the other but im a newbie to the 24V and just need some advice from you pro's. I have a late '02 cummins . All stock except for 4" exhaust and afe air filter. Im wondering if by adding a performance chip or box if i will gain any mileage. This darn fuel price is cutting into my fun !! :-laf I just got back from a trip to Shreveport and the truck ran great. I got 161/2 at 80 and181/2 at 65. I mostly ran 65 but did run 200 miles at 80 to see how it did. Im thinking hard on the EZ but the superchip has my interest also. Im goin to larger bango bolts too even if i do or dont go with a performance product. Thanks all for any help. Im just lookin for a little help