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Dork
3/28/20 10:21 a.m.
Started using Forscan for my miata. It got lots of neat features I don't know how to use. My last app was just for reading codes. Nothing fancy. Anyone have experience with this app? Any neat features I should know? There's lots of features I don't understand about, so learn me.
In particular, the "setting PIDs" thing. I read up on what a pid is, and still don't understand why you "set" them. Pretend I'm 5yrs old...
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Dork
3/28/20 10:30 a.m.
For instance, if I set up pid "01 0E" it's going to show me (somewhere?)
Timing advance |
-64 |
63.5 |
° relative to cylinder #1 |
So... doesn't it already show me that info in real time as I drive? The dashboard you can setup has a timing gauge. Not sure I understand the use of these pids.
One useful way I would like to use this is to see what the computer sees from my right rear wheel speed sensor. I know it's tripping a code (a new sensor is on its way), but I would like to see what the computer is seeing. The process in the service manual states to set the correct pid and monitor.
edit: as I read more in Forscan's site, I'm seeing that PIDs are set, and THEN the gauges and tests are possible. I'm used to an OBD app doing this for you. Kinda neat.
Stumped everyone. Well there's a new one. Guess I'll ejumacate myself more.
i thought this was a Ford exclusive app like Forsys?
In reply to RevRico :
Thats what I thought too. So I went out and hooked my laptop up to my NB.
apparently it works.
Yeah. It very clearly says ford AND Mazda in the app description. Works a lot better on cars after 2000, but does support some models from '96 up, like the Miata.
TIL that a PID is a setting that you ask the app to look at from the canbus system. The pid is essentially asking the computers for the specific information you want.
So, if you want to know the parameters of the cooling system, you set the PID for cooling temp, and a gauge will be present and graphs and charts and shart.
PID generally stands for "proportional, integration, and derivation" in control systems.
Proportional band controls how much the output of the controller changes for a given error between the process and the target.
Integration is how often it does a comparison and makes adjustments.
Derivative is a multiplier to change the proportional band based on how fast the process is headed toward or away from the target.
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Dork
3/28/20 10:26 p.m.
In reply to djsilver :
According to https://en.m.wikipedia.org/wiki/OBD-II_PIDs
it stands for parameter ID.
djsilver said:
PID generally stands for "proportional, integration, and derivation" in control systems.
Proportional band controls how much the output of the controller changes for a given error between the process and the target.
Integration is how often it does a comparison and makes adjustments.
Derivative is a multiplier to change the proportional band based on how fast the process is headed toward or away from the target.
Yeah, I was thinking PID as in electronic control mechanisms as well from my time on CNC machine integrations...
You go to the menu and select which PID's you want displayed on your forscan app dashboard.