okay before you jump the gun you can't wire it to your ignition though like a regular car you have to find a wire off the ECU to get the correct reading. if you wire it to the ignition it will read too low. does any one know the wire off the ECU?
i got mine calibrated for free so i wired it to the ingnition but this was after i found out you could wire it to the ECU.

Chris
Project RS
http://klipzracer.homestead.com/index.html
"Life is short, rev hard!"
chrisdishmon@hotmail.com