I would adjust that 0.9 factor depending on wich type of tranny and engine I have.
Suppose you have a ECVT tranny, then the acceleration is fairly constant over the whole run, but if you have "gears", the acceleration "changes" depending on what rpm you are.
The same goes with an AT, i.e longer "shifttimes" (less acceleration) and so on.
The power curve of the engine is also a factor, a NA engine increases it's HP when the rpm increases, but a turbo engine gives "full" power earlier and less depending on the rpm, so a turbo engine should have a diffrent factor than a NA engine.
If we try to find a suitable factor for MT versus AT and Turbo versus NA, this "tool" can be useful.
/Sonny
