Don't have a Georgetown but have the Coachmen Pursuit with the V-10 engine. I just installed the 5 star tuner on the coach about 1 month ago and have two short trips with it. The first trip was approximately 1 hour each way the second was a 25 minute trip each way.
The biggest thing is the shifting is much smoother. The transmission is not down shifting at every small little hill. The RPM at say 65 mph is no different than before. The unit seems to shift up trough the gears much faster. Have not driven enough to refill the gas tank.
Would have loved to have had it installed back in March for the trip from WNY to FL and back. Hated the 4000 to 5000 rpm on hills.
Was able to get in on a group purchase over on IRV2 forums.
2014 Coachmen Pursuit 31BDP
2016 Ford C-Max Energi
1987 Chrysler LeBaron Convertible
FMCA Member #F438633 - Good Sam Life Member
Coachmens Owners Group Member