Been running K Tuner for about a year now. I set it when I made a few mods. About to add more fun to the car so I will be re-visiting my tune. Was on the 92 octane tune, when gas prices went through the roof I modified it to use regular gas. I have really gotten my $$$ worth out of it! Works really well. There is a little bit of a learning curve but making small changes is super easy. I got the version with a monitor so I can get real-time data. Bought it used on this forum. Super deal! Hope that helps. If you need more info, you can always PM me.