shot a few emails back and forth last night, what it does is use known vehicle weight, known gearing, known tire size and then from this it extrapolates torque(and generates HP from torque) based off of how quickly the engine revs up under load. it also uses TPS to signal when the vehicle is at WOT and that's basically all of the info it uses. time is based off of a timestamp in the datastream as well.

it's actually very similar to how the dynojet dynos work, and comes to VERY close numbers to a real dynojet dyno.

so while it may not be a 100% accurate representation of wheel HP/TQ, it will at the very least give you a basis for what your changes did(increased or decreased power). there is also an option for SAE correction due to air temps and possibly baro pressure.



for increased resolution, personally, i will be making mode 3(maybe it's mode 2?) commands to grab ONLY necessary items from the datastream, so that i can bump up my sampling rate into the 40Hz range. :)