Installation was fairly easy, got it from Extreme Power house. My version is on for open valve and off for stock setting.
The module mount is pretty hard without removing the exhaust pipe. the harnesses are easy to connect and there's enough gap under the factory heatshield to run the wire.
Need to be careful with the pins though, its a 4pin adapter with only 3 pins, definitely take a look with the stock one first and then decided which direction the adapter should go.
Video for mounting and how it works. I was using a ramp so it's pretty tight down there, sorry for the video quality.