[Jackpine]

Robby - As I see it, there are SO many ways the mechanic could have screwed up something when he did your swap. Personally, I would NOT be trying to put a "tune" on it until you get it running properly at stock. You don't need the confusion that interaction of variables from multiple different sources is going to cause.

Try to eliminate as many variables as possible. Take one thing at a time and fix it. Once the truck acts properly under all driving conditions, then, consider adding the complication of a tune. The tune will not fix some underlying problem in the basic setup.

- Jack