Hey Mustang Fans,

I just purchased a 2002 Ford Mustang GT that was an automatic swapped to a manual. The speedometer is showing twice as fast as what I'm going. I did some research and saw that you need to get a new ECM to put into it and flash it. I took it to a ford service center and they said that flashing the new ECM will not fix that problem . Does anyone have any insight into manually swapping these New Edge Mustangs and Speedometer showing twice as much?

Thanks

 

99-04 use all the same setup. This thread here provides the solutions but, I don't know if any of them are still available.

https://www.corral.net/threads/y-is-...-99-gt.406227/