it's interesting that the .fit file contains headers for almost every cycling parameter you could imagine, including "ebike_assist_mode" and "ebike_assist_level_percent" !
unfortunately it doesn't look like specialized is using them. i don't think these were added by specialized since there are quite a few other unused ones which relate to sensors no specialized bike has, like pco and hemoglobin lol.
i also think "enhanced speed" and "enhanced altitude" are some kind of interpolation with the phone sensors, vs the sensors on the bike. i'll find a ride through a tunnel and confirm that. phone speed drops to zero in most tunnels around here - no gps - but bike sensor works well.
i grabbed an old ride that i remember - from my early days with the creo. it was up in the mountains and i was not really well prepared - no hydration or fuel, high altitude. climbed from about 6000 to 9000 feet, descended, and then bonked hard on a shorter ±1000' climb to get home. it's very clear from the ratio (gold, right axis) of rider power (blue) to motor power (red) when i'm in eco, sport, and turbo. the data is smoothed to 5 seconds here, and still pretty spiky, but over long steady state periods like the middle of the big climb in eco, it's really very flat at .3x support. this tells me i had eco at either 15% ease or something higher with max at 30% or so. over this fairly long slow steady period rider power averages 185w and motor power averages 54w. average support factor ... 29.4%. you can then see a similar relationship when i bonk at the end of the last climb and go into turbo. i'm toast and rider power averages only 159w, motor power is at 293w, and support ratio is at 1.87. at that point we're dealing with the max power more than anything else.
one very simple thought is that the final support ratio will vary if you're ever hitting the max for any given setting. this is why the normal microtune is an interesting way to explore this, since it has max at 100 the whole time. what we're really looking for is "what is the support factor when you aren't hitting the max."
edit : since sport is less likely constrained by max, i looked at the segment of sport at the beginning. rider power 209w, motor power 166w, average support factor 79.3%. probably had ease at 40%, it seems
my recollection is that i had eco at 30/30 and sport at 40/70 or something like that, so that sport would reward pedaling hard with lots of power but eco would stay steady, preserving battery regardless of how hard i pedaled. and turbo was 100/100 for sure.
