Generally, no. The FICM programmer works very well in conjunction with most existing ECM tuning. The only concern would be tuning that utilizes overly aggressive timing curves. Since the FICM is basically a restriction to the timing and the tuning we provide relaxes those restrictions, you could possibly end up with a timing curve that is too aggressive. The tuning I'd be most concerned with would be Bully Dog and Sniper. Tunes from Gearhead, Innovative, River City Diesel, or Quick Tricks should be just fine.
I hope this helps.
__________________
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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