first off, order the gryphon ASAP as your probably runing dangerously lean (you probably already knew that), second you must get a factory reflash from the dealer to a stock tune. when you do this, drive like a grandma so you don't cause damage from lean running. when you get the gryphon you can use the canned tow tune (runs richer) just be careful because you may still be a little lean with the headers and duals until you get the custom tunes.
granted, i can't make you drive any certain way, but i always aire on the side of caution