This is a pretty basic outline for jetting on the YFZ450. These settings are for sea level if you are anywhere from 1500ft to sea level these settings should be very close to right on. Anything above 1500ft should lean the settings accordingly. Also, as a good adjustment you should raise the...

Ok guys this thing has been out for a bit lets start sharing what we have. Post up your aftermarket parts, elevation/city, a basic map, and any dyno sheets if you have had a custom map built and dont mind sharing it that would be great, if I forgot any relevant information feel free to post it...

This is a simple write up for any year yamaha yfz450 quad to convert to yz450f cam timing.... also known as the "cam mod". No this will not hurt nor damage the motor in any way IF done correctly. I know some people have heard that there could be some issues with doing the cam mod on an '06/'07...

Here is the chart from vortex. I tried to rotate it but made it blurry. Please list your mods and settings your running if you are using the ''stock vortex pre installed maps''... If your running a ''custom'' map please list your mods and where you received your map from that way people have...

Code 12.-Crankshaft Position Sensor Symptom-No normal signals are recieved from the crankshaft position sensor. Probable Cause malfunction in pickup rotor malfunction in ECU improperly installed sensor Unable to start unable to drive Code 13.-Intake or air presser sensor(Open or Short Circuit)...