if you want more power for an all motor ka, its something you can do to make more power. But it requires a standalone, or a rom tune thats gonna have to be done on a dyno.

i basically did this about a year ago, had enthalpy set me up with a rom tuned ecu and it still knocked. situational adversity made me pull the setup for stock dohc and sold the car.

But if you do this, you should be doing a ported head, some high lift cams .500 + ( custom, highest lift cam available to the public is .4~~) and a bunch of other supporting mods. aka spending alot of money.