Its one for a pda, not sure on model, but car under serious acceleration is loads faster than the gps can keep up.

Surely you can get em better and quicker to up date but this proved to be too much whilst recording speed.

Hit 135 at the peak, was in 4th about 6000 but then i slowed down it went up some more and then dropped so not sure on accuracy.

On steady build ups it did roughlly this, as u can appreciate its hard to look at it to be precice so at 4k in 5th tho it read 100 and 4450 was 110 and 4900 was 120...

Can anyone check with bernies calculator to see how accurate this is please......