fuel mileage issues
I have read many fuel milage threads on this site but need a few more answers please. I have a 2000 f-350 psd, k&n cold intake, 4'' mbrp turbo back, tower with guages and evolution programmer set to tow mode[60-hp]. The problem is last year I only had the intake and was getting 13-14 mpg towing a 8500 lbs. trailer. This year I made the other mods. and now I only get 9.5-10. Does this sound right? I'm not driving it any different than last year [while towing]. However I did just change my fuel filter for the first time. Any input would be great.
thanks-tooled
|