Yes so the mobile tech said they are not touching anyone's Mustang that has any aftermarket tune or mods (chip mods not things like springs or sways). The update he said touches all the modules in the car, BCM, ECM, etc.
I called the dealership yesterday morning and their mobile guy showed up in my garage this morning. Took him about 20 mins to complete. He courtesy checked everything including levels etc.... Installed a new set of wiper blades @ no charge. He also scanned my wife's 2017 GT/CS Convert courtesy checked etc...
The technician that came to my house actually asked if I had a tune.
It's possible on the S650. I've not read anything related to the S550. If it was available to us, I'd think Ford would state that in their notification letter, to 1) encourage people to complete the recall, 2) save $$$, time and effort, dispatching or using techs to complete the update.
Colony Ford in Brampton seems pretty good. I've taken my ride there twice to have them apply the latest Roush calibration as they are a Roush authorized dealer. You think they would drop the ball?You have a roush tune, are you sure you want to let them mess with it?
I have a dealer that I fully trust as well, but I don't want to take chances for something that doesn't need to be touched.
Just keep it in the back of your mind if you have to take it to a dealership for something. They will automatically do it since it’s considered a safety issue. I think there’s been some mixed feedback regarding cars that are tuned and whether it needs to be returned to stock to do it and if it’s not it may mess with the tune (or the dealer just won’t do it).
I'm tuned, and I could revert to factory tune but then if they update me I would need to get a new tune written for me since my tune is based on the software version back in 22. Big pain in the Ars!