I have iPhone, where can I find that parameter on Forscan? Torque doesn't exist on iPhoneYes, I can monitor it in either ForScan or Torque for Android.
In Torque, you'll have to add it as a custom PID.
When you add it, set the min and max values to -1 and 1. You'll use header 2203e8. Name it whatever you like.
Here's the equation:
(Signed (A)*256+B)/-16384
With this configuration, values closer to +1 represent favorable fuel quality. This is how it appears in ForScan.
I've seen others use the equation with +16384 (-1 reading being favorable), but I wanted the measure to match between apps. Feel free to use whatever you want.