RPM axis label in xdf - tunerpro calculation

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-nick
Posts: 2
Joined: Sun Mar 08, 2015 6:07 am

RPM axis label in xdf - tunerpro calculation

Post by -nick »

Hi folks!
First post. So far, all of the xdf files that I've seen have the rpm axis labels entered manually for each map:

i.e., label source > external (manual)
And then the rpm values are manually typed in for the row labels.

I see that the "label source > internal, pure" option allows for a conversion formula for the labels. Has anyone figured out how to write a formula so that tunerpro automatically converts the hex into rpm values?

My motronic (Porsche) uses the conversion:
hex: 4B 6A
where:
6A= (256-6A)*40 = 6000rpm
4B= 6000 - (4B*40) = 3000rpm

I believe that is the typical conversion for motronic. But how to code that into tunerpro?

Of course, I could enter rpm in manually too. Using a formula just seems more... elegant. ;)

Thanks for the help!

ps- If anybody has a tip on how to figure out the conversion for temperature sensors into degreesC, I'm all ears.
Nick
1991 Porsche 964, Motronic M2.1
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