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Speedo calibration


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The best way is to just measure everything and put the values in. Note that the Mk2 FG doesn't use the VID block so any changes you make there will be ignored, they need the cluster to be reprogrammed with IDS.


Edit: Instead of measuring you can simply measure the speed error with a GPS speedo, divide the speed measured by the speed actual and use that to multiply the rolling diameter.

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Ok so for anyone else who wants to know what to do, this is what i did and works a treat.

Calculate the difference between your current speed and actual speed. For me, my speedo was at 100, gps was at 102, so a 2% difference due to a larger tyre, ie. 275/35r19 instead of 275/30r19.


In vid block scalers, find tyre size, should be 0.78 etc and minus 2% off this value.

Reflash, and all good to go.

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