No need to have your tunes modified from you've already had done. The snorkel modification will work just fine with your current tunes and the muffler change doesn't require any further modifications either.
Hope this helps. 
__________________
Bill Cohron - The Mad Doctor  
Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997!
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www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar!
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