I purchased this to go with the Bassani Road Rage 3 exhaust for my 2018 Iron 1200. It was relatively easy to tune my bike to fit with the new exhaust system. You just have to make sure to select the proper map.
Just installed it this weekend. Nothing noticeable on my Ultra Classic. Only change I have made is the Vance & Hines Eliminator 400 slip ons. It is a little difficult to connect to the blue tooth on my phone so not going to be connecting very often.