How do I calibrate my speedometer?

[Tem]

You also have to remember the gauge isnt linear.

That's why a programmable chip, like the pic, would be great. You could correct it just the way you want to.  s8) s8)

[cdrskull]

I have 18's on mine and it put the speedo out by 10%.. I fixed this by getting some new dials made up that corrected the 10% (with ferrari logos I might add, if you want a set there £50 posted!, I have 1 set of clocks left)



I have also just coded up a little board to read the speedo pulse. If I wanted I could of altered this pulse by 10% and then connect the output back up to the speedo.. which is the same idea as the pic chip above.

Or in general.. when your speedo says your doing 50, your really doing 55 !

Steve

[Tem]

The faces look great. Do you have a pic with them on the car with all plastics in place?  s8) s8)