There's a number of hidden PIDs it would be useful to find for our cars. The ones that e.g. Nissan's dealership-only Consult-III tool or sometimes Cipher can see but default scanners like Torque can't. The big ones on my list: 7AT fluid temp from the TCM (used to set fill level properly - even Cipher doesn't have this last I checked), Oil Temp (it's in there somewhere...), and Brake Pedal Position (for track data logging. I've seen one proprietary data logger that can supposedly pull this from our car, so I think the PID is out there...).
I tried running TorqueScan, but honestly I've never let it run through its full range, just takes too damn long...
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