Originally Posted by
jamie956
Was thinking about the abs pick up on my 2wd hubs but not sure how many pick ups there are on per rotation, it might have to strip it down and have a look.
if it's anything like my stack speedo, you only have to drive 2 miles to calibrate and it works out how many pulses relate to speeds. you do need to drive around 40mph though to keep it accurate though, but is within 0.5mph at 70mph, so pretty good indeed.