I had an idea for me to be able to log which gear I'm in on my DIYPNP. However I fail to see a scripting function anywhere within Tunerstudio or MegaLog.
To determine what gear I'm in, I would use an equation to determine the ratio of engine RPM to wheel rotation's per minute, and from there I should be able to get a rough gear ratio. Then finally I could compare this rough gear ratio to the real ratio (within a certain % of the real ratio) to determine what gear I'm in .

So TL;DR, I'm looking for a way to add a script into TunerStudio or Megalog.

 

Do you have VSS hooked up to your DIYPNP? If so then MS can already calculate the gear and show it in logs.

 

Lars is right, the megasquirt can do that.

You can also do equations in megalog viewer

 

I do have the VSS signal (the MPH value in the log). I was looking at basically creating a value that goes from 0-6 (Where 0 is neutral/clutch in, and 6 is reverse), so that in my logs I can see the change in gear without examining the RPMs.

Also, what value is the the calculated gear in Megalog? I've tried using MPH xth Gear, but I don't see that fulfilling what I want exactly.

 

I saw the equations part, however I'm not sure how to do conditionals.
I guess I would have to calculate a gear ratio based off known RPM and Wheel Speed. From there I would be able to create a gear ratio variable. This would more useful, because as I shift, there should be a dramatic shift in this gear ratio variable.

 

What you want to do is under Advanced Engine->Speed and Gear sensors->Gear detection

 

I may have misunderstood the VSS meaning. In my performance fields in TunerStudio, my Vehicle Speed Source is defined as userSpeedMph. Which is based off of a value in the custom.ini. I looked there and I don't see anything about calculating my MPH. Now I'm quite confused.

 

It is 4/20 and you are in lowell. soooooo.....