Enter values in the various fields with white backgrounds.
If you have a VW with an 020 transmission, then you can pick
5th gear of the gearbox by selecting the proper transmission
code from the select list. For other vehicles, just enter
the numbers as appropriate.
Field values can be expressions, so if you know ring and
pinion tooth counts, you can enter those directly. Try typing
45/12 in the Ring and Pinion ratio field.
E-mail me with questions or comments: Eric Fahlgren.