The controler it self installs easily, in fact pretty much idiot proof. The problem being not a whole lot of information on setting it. Its a ride and tune situation until completely set. Besides that i would make sure that its completely away from any chance of getting wet, it does not llok like its sealed very well for moisture. On the up side it will make a 700 king quad do wheelies in high range. Along with faster acceleration and more mid range and top end power.
This worked great in my 09 Grizzly 700. It wouldn't idle well until I installed the FI Controller. Now it idles good and it runs smoother overall with more power. It only took 25 minutes to install as well. I'm very happy and I would recommend this to anyone with a fuel injected ATV.