<div> My Gompy's type scooter cdi works great using extra diode - I am using it on gokart for racing purposes (125ccm chinese zhonseng/Lifan engine with inductive pickup spins up to 13000RPM). End of my last competiton was broken front sprocket (broken external teeth) I now it sometimes have twin spark in very short time but this is no problem. After 12000 PC tacho jumps up to 20000RPM why? </div>