I have a 2005 6.0 Predator using it on a 2006 F250. Am using the 9r03. What changes will be made using the 9r04?

I have a 2006 F250 using the 9r03 download. Am getting 13+ MPG on the 65HP tune and 16MPG on the 100HP tune with plenty of black smoke thru 1st & 2nd.

Is there any custom tunes or downloads available that would improve MPG and decrease the black smoke?

I keep reading your forums and find you recomend downloading the r20 to some for a 2006 F250, yet recomended the 9r03 for mine. Whats the difference and how many different downloads for a 2006 F250 is there. Where are they & the custom tunes accessable?

Sorry for the typo error. Yes it was a 2003. I powered up the predator and the serial # is u7165 using the v.8r13. As far as the fuel filter, this was a brand new 2006 truck with less than 2000 miles on it when I tuned it with the predator.

Bough the predator for a 2002 F250. It worked great. It was like having an instant "hot rod" truck. I traded it for a 2006 F250 and had to down load the updates for it to work. It just isn't the same. It doesn't have near the power and shifting seems slugish. Gas mileage on the 2002 was around 18 ...