Can anybody give me the correct settings for Trailtech's Vapor computer tachometer. Bike is WR400F 2000. I have red wire wrapped around the plug wire about 8 rounds, and the first PPR setting is 2. It seems to be right for idle revolutions, but incorrect for higher revolutions. I have tried also other settings, but the tach shows to much rev's. What would be the revolutions, when the PPR changes (if it does?) and what is the correct second PPR figure? Any help is very appreciated.