Dom, isn't yours the LC1 with the gauge only?
Brad, I have one of the early LM1 units ( I had to return it once for fixing under the warrenty ) that I bought with the RPM added feature and later upgraded it to the LC1 to get two readings from both senders into the LM1 data storage so I could download any recorded data into my laptop later instead of trying to read it while driving
That work well for quite a while and then it didn't
I'm still not sure if it was my old IBM 98E laptop or the unit that quit working
Innovate stop supporting the LM1 units a long time ago I sold the Duster and all the Innovate parts are now sitting in the shop stack up on each other
I did learn a lot about carb. tuning and the functions of the different circuits on carbs.
All my use was with unleaded fuels, mostly before our stupid state started adding alcohol to all of our pump gasoline