I tried to do a speedometer correction on a 08 F150. The truck has 4.56 gears and a 35" tall tire. I know about settung the Use VID paramater to Disable. The stock file already had the Use VID set to Disable. We were using a Mustang Dyno for the actual mph readings to check against the speedometer in the vehicle. No matter what I set the gear ratio or tire revs/km to nothing changed in the speedo error. I tried tire revs from a low of 300 to the stock 424 setting. Tried gear ratios of the stock 3.73, 4.10 and 4.56. No matter what was in the fields the speed error was always actual 56, indicated 66. Being curious why the Use VID was already set to Disable, I downloaded the 2 stock 08 F150 files in the repository. One of those had the Use VID set to Enable and the other had it set to Disable. Any thoughts on this? Attached is the stock file.
On a side note, I could not datalog the truck either, The scanner would connect and I could populate the table with PIDs. Hitting the space bar to start the datalog would always error saying connection was interrupted.