i have a 2003 F250 6.0, i have disconnected the egr, replaced stock air system with K&N and added HYertech programmer III.
my gas mileage is about 20 mpg, my problem is if i am going about 50 mph and go to punch it to pass someone the rpm kicks up to about 3000 but the trucks seems to not responsed the longer i stay on it it slowly picks up but not like it should you can hear the turbo but the trucks not going any faster. if i let of the gas it seems to lunge forward and smooths out. it fells almost like it is bogging, also if i stay on the gas it starts to smoke like a train? any help
