I had one on my car before going the Ford Performance calibration route.
The Roush did nothing except increase temps...by a lot when sitting at lights, so imo without a tune its nothing but an eye piece.
I know someone who recently sold to Vroom without issue. Be 100% honest with the quote and all should be good. If it asks if your car has scratches check it off. However, I have heard stories of people selling their car, 2 days later getting a call saying their inspection didn't match what was...
A lot of dealers will say, "We didnt find anything abnormal" so if you have videos it helps to show the dealer (if they are one that actually cares) the sounds. Waranty comes into play if they find something and need to service it. They still have to look and document any issues you bring up.
If you want a tune and want to play it safe, get one that's actually covered under a warranty. Roush and Ford Performance are the only 2 if installed at a dealer or ase mechanic. They are more calibrations then anything, but can wake the car up a little. You just won't get anything dramatic.
I contacted Ford Performance and they said there hasn't been any updates since the calibration came out and unless they find an odd serious issue there will never be one. I never got a response as to why the procal says writing to disk after looking for tunes other than it will always do that.
Anyone know if there has been any tune updates since the calibration came out? FP says they don't usually update unless theres issues. I plugged my procal 4 into my pc for the heck of it. It said looking for tunes then sending files then writing to disk. My tune shows as kr3a-fpmga3-bgf.bin
If the tune isn't stored in the procal something wasn't done right. It does sound like the tune wasn't uploaded to the car as mentioned. I downloaded the tune to the Procal myself before taking it to the dealer for install.