I have not done anything but take the speed limiter out. The challenge with this system is you have to create your own maps. As the tuners can tell you this takes a lot of time. I just have not had the the time. System does what it says and if you have a little knowledge of excel it is easy to create your maps but there are lots of things to take in account and you need to understand how your engine management system works so you create a drivable map. If I was drag racing a bike this would be super cool as I could create the maps for a certain application. For all the different demands of every day driving it is much more complicated.