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Discussion Starter · #1 ·
My comment concerns the difference between speedo, the speed the flashpro shows, and the real speed.

For example: if i set the cruise control to 100 mph, and datalog, it datalogs a constant speed of 95. Is common that speedos dont show real speeds, but i dont think the real speed could be 95 like the Flashpro shows.

I think none of then are the real speed, and we have two kind of speed differences:
- Speedo: a % difference over the real speed.
- Flashpro: a % difference under the real speed.

I asked Doug and he told me to make the Flashpro speed adjustment:
FlashPro Help

My question is: do you measured o know what are the best adjustments for both parameteres in order to have the real speed both at speedo and flashpro?

Thank you very much for your time!

Juan
 

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Measure the actual vehicle speed with a GPS unit, then change both speed adjustments until both the dash and datalog speed are accurate.
 
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