Re: Engine ecu (tune) question
An ECU with Ram programming will not safely run the WK engine/vehicle, and vice versa. There are tons of differences between the two tunes based on vehicle-specific features, emissions programming, wiring differences, etc.
The Ram's shift points are higher due to more energy required to move the vehicle compared to the WK, and different emissions tuning in stock form.
An ECU that's programmed as a Ram can be reflashed with WK software and vice versa. if you look at the front of the ECU, the base sticker is the same.
For function as a spare ECU, it won't run the vehicle without having the proper VIN programmed so it wouldn't make sense to try and use one spare for two vehicles since it'll run only one at a time.