Not the SAME data...but each header alters different aspects of the tuning.
Here's WHERE the "parameters", "maps", and "functions" come from:
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
Last edited by cleatus12r; Tue, May 5th, 2009 at 08:15 PM.
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