I wouldn't do it. The dealer flashed my 2004 and killed the power and economy. I took it in for a turbo and asked before I took it to them if it had to be flashed. They said it didn't, so I brought the truck in and made it perfectly clear that I did not want it flashed. They did it anyway. The truck is a slug now. At least 50 HP went away and 1 mpg. Once they flash it, there is no going back to what you had before. I believe that the tech enters the vin number of your truck and Ford sends them the current flash for "your" truck.
The induction heat flash does help it start better when it is cold but detuning the engine is not worth it. I did some data logging to try and find what happened (they didn't tell me that they had flashed the truck) and found the injection timing in the negative numbers. I'm guessing that is part of the detuning strategy.
The induction heat flash does help it start better when it is cold but detuning the engine is not worth it. I did some data logging to try and find what happened (they didn't tell me that they had flashed the truck) and found the injection timing in the negative numbers. I'm guessing that is part of the detuning strategy.
