Since it WAS working and now it's having issues (the programming on the chip doesn't change), I'd blame the switch.
It shouldn't be too much trouble for Corey to send you a new one if you email her.
sales@phptune.com
Sorry, been out of the area all weekend and didn't get your PM until today.
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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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