Speedo Calibration Unit
I have made a circuit which can recalbrate your speedo. Of course this is if you have made a change that is outside the range of the standard speed sensor gear change. The cost for a
VDO one is about $280!!!!! Way too expensive which is why I have made my own.
The cost will probably be around $100 and I will write up wiring instructions. You can place the unit behind your instrument panel. All you will need to do is cut 4 wires and strip the ends, so soldering or crimping of wires is required.
I can do a calibration for you. If you drive past one of thoose odometer checks and tell me how far you have actually travelled and how far your odometer states you have travelled I can calibrate the unit and all you need to do is connect it up.
Let me know if you are interested, because I will be making the circuit boards in one hit which will save you money due to less labour time.