I have an 04 Liberty GT, engine died, and I have replaced engine/turbo with one from a 06 GT Jap Spec though.

Do I need to have my ECU remapped to run this engine because it is a different spec? I have no mods on the car at all it is just stock, and not really to keen on spending1k+ on a retune as im not planning any mods for the car i just want to have it how it is.

So can the stock ECU be remapped to run this engine? It is all running fine and have been driving it for a while now, but im thinking it really should be remapped/retuned for this engine to be 100% safe.

Any info much appreciated.

Cheers