I am sure someone will jump in here and correct me if I'm wrong, but I am pretty certain that the Gryphon will store your stock settings. Once you hook it up and begin to program the custom tunes, the Gryphon will remove the stock files (store them) and re-install the new tunes. So if you ever ewant to return to stock you can.
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07 FX4 SCAB, 4.56 Yukons, K&N 57 CAI, Flowmaster 40 SI/DO, Rhino lined, Westin grille and tail light guards, Kobalt 2500 truck box and the best mod of all.....a Gryphon!
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