I’m now about 85% done with the installation of the Innovative MTX-L and I’ve done all the dirty and difficult bits.
The first part was to route the wires from the O2-sensor on the left side collector pipe to the gauge. Routing the wire around the gearbox and through the firewall got me really dirty but I found a good path in the end.
Next up was to get power and ground wires from the front of the car to under the passenger seat. As the instructions said to avoid noisy grounds I chose the ground point in front of the instruments rather than below the dash as that is were the radio grounds to. That also meant I needed to relocate the ground for the lambda-box to make sure that there is no voltage difference between them.
All of the above is finished so the only thing left to do is to connect all the wires to the gauge and then calibrate the sensor before starting the engine.