Hi thejm:
There are pretty easy to follow instructions for Forscan at
https://tinyurl.com/y8v5k9we. These are the instructions that got me through the process. I use an OBDLink MX Bluetooth adapter and the Windows version of Forscan (the iOS and Android versions of Forscan do NOT allow changes to module parameters). You also need a free 2-month extended license for Forscan; the link is in the instructions. I bought a cheap Windows tablet to run Forscan since I only have Macs. It's still cheaper than having the dealer make the changes, if you could get them to do it.
Jim