changes gears hard

[scmoore]

U7170
V.9r04
2001 Ford F250 7.3L
When I bought this truck new in 2001, diesel was cheaper than gas and I was towing a 28 foot camper. Now diesel is pushing $3.00 a gallon and I only tow something 2 or 3 times a year that weighs 3850lbs. I bought this predator to get better MPG. When I choose the economy tune, the truck changes gears very hard. I can't stand to drive the truck in this tune. I chose the 85HP tune and the transmission changes smooth. With the exception of 4 inch turbo back exhaust, my truck is stock. Can the economy tune be modified to change gears smoother? Is this something I do? Also, a diesel mechanic told me that no matter what I do, I can only get 60 more HP with stock injectors. Is this true?
Thanks,
55 year old newbie to truck modifications

[mikel]

There should be a global line pressure adjustment in the adjustable parameters, try reducing that a bit.