One of the best tools for tuning is a wideband o2 sensor. After dealing with the large Innovate box wedged in the dash I finally decided to get their standalone wideband cable and gauge combo. It installed very easy. Only just a little trimming in the headlight switch hose was needed. It can all be removed with no traces. Since I hardly ever turn off the lights I just left them on and secured the switch back in the dash.
I need to reprogram the led colors but aside from that it is not too distracting. Don’t confuse a wideband with the cheaper narrowband gauges that tap into the factory sensor. Maybe one of these days I can get the data-logging box with accelerometers.. You can click on the images to get to a few more in the gallery.