I hate to say this, but historically we've seen fuel economy drop for the first couple weeks after the chip is installed and then climb back up to stock or better. The reason is that folks almost always drive a little more aggressively when they first install the chip, even if they don't realize it. Again, this is just our experience and your situation may be different.
The ideal program for economy is usually the 80DD or 100P program, as long as the driving styles don't change.
Take care.
__________________
Bill Cohron - The Mad Doctor  
Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997!
(678) 890-1110
www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar!
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