Can High Performance Spark plugs really add performance or is it a waste of money?
Has anyone used a high performance spark plug and notice a performance increase, what spark plug is the best for my 686cc motor
I use the CR8EIX irridium plug and love it. I wouldn't say that it adds power. I just like it for easier starting and it is harder to foul. In fact I can bump the throttle when cold with the irridium plug. That used to foul the standard plug immediately.
How often should the spark plug be changed. See i dont ride my quad all that often in the winter, I do keep up on the oil changes using a K&N Oil filter and Ams Oil 10w40 should the spark plug be changed every time i change my oil? What are the other 700r owners doing?