I don't know how you new device is set uo but in general you should check the error at more than one speed. It is possible to have the difference vary by speed. I think of this on a graph as an incorrect slope and the static error as an offset.


1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed


My Chevy Master 4 Door is on the Road!