So I know all the typical answers to this question. But I'm looking for some good info. I've got a later model farm truck that is never going to see the highway again. It will be completely destroyed before it gets the opportunity. That being said it does a lot of slow driving and idling and exhibits the symptoms that one would assume for a modern truck like this. My question: Is there any software left that is capable of the "custom" modification that is needed? In reality I know there is, but anything available for someone that hasn't had it before all the new stipulations got thrown in?