Note:
We warn people urgently not to use gasoline pressure regulators with a higher pressure. (from K-model).
The consequences are more excessive fuel consumption and soot formation and thinning of the oil of the engine.
Big air snorkel called air charger worsen the torque in the lower range,  these make only sense from stage 4 on.
Don't use the big air funnels from the RS model, these are much to big and make a bad air flow.
Don't use the header tubes from the RS model, the original one is better.
Pieces of equipment like PowerCommander, Rapid bike, Techlusion u. a. work after unfortunately not as desired
our experience and almost always supplies drastic disturbances instead of to an improvement.
Special plug leads are insignificant and from our view pure financial waste , absolute no power gain.