ecm rollback and ficm tuneing

[Brinker]

Ok i have trying to get read up on how all of this works. I'm thinking about sending my ficm and ecm in to have tuned and rolled back. But i keep hearing about differant tunes for the ficm and im kind of confused, I'm just looking for better throttle response and mpg. I have the lastest cal in my ecm.

Im also wondering how long it takes to have it done when i ship it to them. I don't drive the truck every day but i also don't want it down for weeks. I have heard that it can be really hard getting ahold of the guys at PHP.

Think thats all im wondering about besides what fourms i would need to fill out when ordering.