Not possible. You can only install one chip at a time. Besides, "stock" on a chip is not "straight-from-the-PCM-stock". Stock on a chip is a burned position and still bypasses the PCM's internal memory.
You could, however, buy two chips and switch back and forth between the two. I haven't looked to see what kind of truck you have, but switching chips in a 95-97 isn't the easiest thing to do in a hurry, but it could be done. That way, you'd have a total of 11 tunes plus a "stock".
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Tuning, PCM flashing, and burning chips for 7.3s since 2008. Repairing all aspects of 7.3L Powerstrokes for 25 years.
Eight 7.3L PSDs in the driveway including a 1994 Crown Vic and 1973 F100/2002 F350. Looking for the next victim.
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Wed, December 2nd, 2009, 08:56 AM
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