Interesting topic & possibly more untapped potential in our thumpers to be discovered. I know that in the days of mechanical ignition advance you could by a piece of metal that would alter the factory ignition curve for better performance &/or better mileage in cars. My gutless 86' Honda Accord used to stall on uphill stoplights all the time until I twisted the distributor a few degrees (left/right? don't remember) then it pulled like a tractor but lost power on top. Same with my wife's Toyota Paseo. Some bikes, like the C50 don't have a "fixed" ignition curve. It changes constantly for optimum advance for the condition, based on input from sensors wired to the black box.