Originally Posted by 32krazy!
i was thinking the engine is tied to the ecu by vin #. the ecu is specific to the car by vin and engine to the car by vin. could be wrong i have been before!
If you took the ecu, sensors, injectors, etc from your existing motor and swap them to the new motor it should fire right up. When you change the engine to something different than what was stock (v8, NA to SRT swap) all the electronics would need to be carried over to the new engine and be programmed to the car.