A proposal:
Repurpose the Eurodyne [[#Octane_Slider]] so that instead of looking up the adjustable slider value and the min and max octane values - it looks up the %alternative fuel value (measuredfac_afu_ratio_det/fac_afu_ratio), and calculates an interpolation value against that.
Existing settings for "min and max octane for adjustable features " can stay the same. The calibration can be adjusted for 0 - 50, for example.
Existing octane slider functionality would be overridden/removed. RepurposeThe implications of the slider 'write dynamic identifier' would need to be assessed