Octane Adjust Ratio monitoring?

[Dragonheart]

Hi!

I'm trying to monitor Octane Adjust Ratio parameter available on 2.3 Ecoboost and other Ford motors.

The only similar parameter I've found for PCM module is OCTADJ_R_LRND measured in %. Is this the right one?

Also, other sources like Cobb say it's measured in values from -1.0 (being the best) to 1.0 (being the worst). What is the values range in Forscan? I've seen 76.43% with RON92 fuel, now I have about 90% with RON95. Gonna test RON98 and RON100, but I can't understand how do these percentage values in Forscan correspond to -1.0 - 1.0 range.

Thanks!

[HannesK]

Hi,
i tried to read this parameter in my 2019 Ford Focus ST with 2,3 Ecoboost but i cant find this parameter in PCM Module,
is there a possibility to add some custom parameters ?

[omar302]

I am attaching a screenshot of the PID from my car. You can see the name and change it to Numeric and increase the number of decimal digits.

Screenshot_20191119-143227.jpg (383.26 KiB) Viewed 990 times

[HannesK]

sorry i forgot to explain that i use the PC Version,
Is it in the PC Version possible to see this parameter ?

[omar302]

PID name should still be the same in PC version.

[HannesK]

But i found no way to enter the PID Name, there are a lot of PCM Pids available to activate them but i can not find the Ocatan one.
And also no way to enter a custom new PID

[omar302]

Here it from the PC version:

octane.JPG (48.07 KiB) Viewed 751 times

The attachment octane.JPG is no longer available

[HannesK]

Thats what i tried, but this PID is not available in this view for my Focus ST Mk4, does it mean that this parameter does not exist in my Car or that it does not exist in Forscan for my Car ?

[omar302]

Honestly don't know. Maybe @ForScan team can chime in.

[Dragonheart]

I am attaching a screenshot of the PID from my car. You can see the name and change it to Numeric and increase the number of decimal digits.

Screenshot_20191119-143227.jpg

Replying after 1.5 years
Thanks a lot, changing to Numeric and setting 2 decimal digits did the trick. Now I'm getting correct readings, like -1.0 with RON 100 and RON 98 fuel. Gonna test with lower octane fuels too to check the difference.