Re: 35s on a obs??
Well its a big truck with a lift & big tires. Id say u could see anywhere depending on alot of factors between 12-18mpgs.
Its a diesel dont be afraid to wind it up its not gonna hurt anything. I mean if u want Great mpgs Yea keep it as low as possible but dont be scared to drop down a gear & spin it if u come to a Hill.
You will like the intake & exhaust & it will help it breath better.
I do suggest a custom tuned chip & good mechincal gauges. Id take a look at power hungry performance Hydra Chip.
Really the injectors are gonna be the limiting factory for power.
Also Hint these trucks are addictive.
96 F250 2WD, 286K, Built E4OD, 180cc Injectors, Tony Wildman Tunes, Beans Fuel System, 3in DP - 4in MRBP exhaust, CAI, 4:10LS SCLB, Traction bars,
62 F250 4X4, 223 I6, T98 4 speed, 4:56s RCFS (Reg Cab Flare Side. Factory) 31x10.50x15s, currently on 16in Alcoas