Hi Duat
It seems we can emulate idle switch too
Now start and warmup engine to working temperature.
After that short idle signal to ground via 1kOm resistor constantly.
Try to open throttle.
Engine should rev up to 1800-2000rpm, then drop down, then again and again.
Check this, if it works then i'll make firmware, calculate bushing size and it will be ready within week or two