Originally Posted by
PegasoLS3
I have a 2017 F-150 Limited 4x4 and I recently got a lift kit and 325/50/22 tires (basically 35")
My truck is tuned with HPTuners and in order for me to calibrate the speedometer I have to open up VCM Scanner and change the "Revolutions Per Mile" Although it does correct the MPH it causes a Wrench saying "See Manual" to appear on the display and FordPass app says "Powertrain Malfunction/Reduced Power" although the truck has no reduction in power and runs fine.
I noticed that if I look at the TCU values using ForScan the line
754-03-06 - 7800-7D7D-7D53
Changes to
754-03-06 - 0078-7D7D-7D53
Anyone have any tips or tricks to get around this? I tried driving the truck 800 miles this weekend and nothing happened.