I just confirmed that my speedo is not accurate.

[Emohawk]

Mine reads about 7-8% higher. I use it as a tool to prevent speeding.

 

[Rotaryknight]

Mine reads about 7-8% higher. I use it as a tool to prevent speeding.

its a tool I never use to prevent speeding lol

 

[DanS]

Look

How to correct speedo error.

http://www.779cc.org/forum/garage-m...-x-type-speedo-drd-connections.html#post57619

SpeedoDRD