ABSOLUTILEEEE loving this thread! Just discovered this.... In a 109, can't quite believe there's another broadly on the same path as me?! I've an ACRed 17H running gas with a Wide-band gauge etc. I've Roland's Powerplus head. cam, SU carb set-up. I'll send you my pics of my trigger-wheel install. In my case, being a daily-driver, when the gas-cylinders empty, petrol is the luxurious fuel for 'get-me-home' use. I rarely use it. Hence, for my use, I've skipped liquid-injection, yet I'm set to control Lambda via a Stepper motor. Closed-loop, single-point gas-injection. For this I'm using an AEB Leonardo Lambda controller, via a NB Lambda. I'm going for Megajolt on ignition, but run a 123 dizzy now. The 123ignition gives me two curves, one each fuel, but is 2D, and gas evermore than the liquid, requires decent ignition.
Standby, now I know you're on this, I'll give you what I have with my own project.
Pix: You're looking at:
1) A BLOS ( the gas equiv. of an SU) this controlled by a Stepper in Closed-loop.
2) Innovate WB gauge
My trigger-wheel next...
In short we're doing the same thing biased to different fuels. As I said, love the thread... keep at it.