Calibrating MPH

[Matt Garcia]

What is the most effective way on calibrating my speedometer and Pilot Gauge? My speedometer is 5 mph faster (or slower) than my digital Pilot Gauge.

Is it best to use a GPS and if so how does one go about doing it? Thanks.

[Domsz06]

I used a gps unit to do my perfect pass, and then I based my main speedo on that. I can't get my main speedo to be accurate through all the mph's, so I just did it accurate in the 18-28 mph range.

Dom

[lee]

Pilot speedo might never be right, just use the GPS and set "real" speedo.