Diablosport Forums

I have just purchase and install the u7165 on may 16, 2008 and have it set for 65 hp and 155 ft/lb torque, so far I have only gain 1.5 mille for gallon and when I got to the pump I lost it on the price of diesel going up. I am a hotshot driver and I need a little power what most of all I need the fuel economy. I have a 4.10:1 rear end and I pull a 40 foot gooseneck with it. What is the way to get a better fuel savings?

Thanks for any info that you can give me

I just purchased my first diesel (2003 F250 with 21000 miles) I have been using the u7165 for about a month now and noticed about the same in mpg. For some reason I would get better mpg on tow tune for city driving. I would got around 20 mpg. On ther performance setting, I got 20 mpg also, but waiting for my 4"turbo back exhaust before I play with it some more. The only other upgrade I have done is put in a airaid replacement filter and just changed the oil with RP.