Just looking at the IBC and has anyone else noticed it says its got reverse battery protection. Judging by it circuit diagram you will get alot of smoke if you try that. Also (I may be wrong) but 50A continuous? Will need a very large fan. But as they are usually not used for more than 5 minutes and then never at full current for that long they should be ok.

Sorry but I dont know how to program those and not looked at the code, but i didnt think it would be too hard. All you would have to do is find the code that updates the PWM output and apply a log or exp function just before it.

*goes back to the bench to figure out why his dual speed controller doesnt work yet*