I installed my V&H RSD Tracker exhaust and SE air cleaner last week. I recieved my Fuel Pack yesterday and installed it last night.
Other than fitting it under the seat pan, it was a very simple install. I installed the map they recommended, and what a difference it made. The bike seemed to run great without it but I just wanted to install it to be safe.
I also did not want to spend the $800 for Harley to install theirs. After installing it I went for a ride, the bike seems so much more responsive and runs much smoother now.
I highly recommend the V&H fuel pack.

 

Love the RSD Tracker!

 

agreed. i would have bought it but you have to remove the passenger foot peg. my wife would not appreciate resting her foot on the exhaust