I just ran mine yesterday and hooked it into my Greddy E-01 for display. The instructions say to mount the Lambda to the body under the car somewhere. My dilema was that I wanted to be able to read the sensor from both test pipes when I switch it so it had to be mounted where the sensor could reach the lambda cable from both sides.. The answer and best location I found was to mount it to the body just outside of the passenger side fender covers right next to the AIV outlet pipe. Secured with zipties, I then ran the cables behind the fender cover and into the compartment where a main harness goes in. It ends up goin in at the passenger kick panel. I then wired it all up and the DB9 cable runs up and into the glove box and is actually hidden in there. Its good and stealthy. It worked out perfect and displays digitally up to two decimals (14.75) and is shown on a graph visually at the same time along with boost pressure and coolant temp! Next is to hook up fuel pressure to the E-01.