Quote:
Originally Posted by wpoll
My point here is the coding only makes the speedo match the calculated V: value - whether that 's accurate is another question. One we can't answer. 
The only speed that matters is the one on the officer's device...  |
Actually no. The first reason I installed nav in the first vehicle I did it to was to record gps mph readings. The logs it produces are admissible in court and will trump a radar gun. I have used them before to beat speeding tickets. That's one handy thing with the android units and most other newer nav systems. I go by the gps's speed reading always and just compensate on the speedometer.
Basically I look at the gps software's reading and then see how far off the speedometer is and then go with it from there.