I have a Superchip programmer for a Ford V8 or V10 gasoline engine... You can program your shiftpoints and have 3 different driving options with it. PM me if your interested...
Hes a fibber... The chip helps most when towing stuff, I can get around 14 on the interstate (semi flat) pulling my boat at about 75mph. Thats about the best MPG I've gotten out of the V10 unless your going down a hill in neutral.