Need help on project truck.
 

Can I use a none 4x4 ecu if I put a 4x4 transmission on my truck. If not what would I have to do. Thanks.

would need to know on what? and what transfer case are you planning on using to what transmission ?? Making a Frankentruck is not a good idea best to leave it stock and buy something else unless you have a great deal of expertise in engineering or a boat load of money,