To creat a good spark in the engine you need a good set of spark plug, spark plug leads and coil.
But do you know they are all positive current.
A simple solution to Rev problem is to install some earth wire (pictured).
There is one on the right hand side which is the orginial one I use a stronger one. And the other one I copy a guy in the Hong Kong mag.
The result is good. My rev use to jump around 1126 to 1614 but now it is stable all the way. Also a good amount of pick up speed.
Over all cost around $25 but the performance is GOOOOD!!!
