Been wondering if it would be worthwhile having my own programmer. Just not exactly sure what all can be done with one. All I've discovered so far is that it can reprogramm dess keys, check the hours of use, an possibly error codes. What I'd really like to do is reprogram my own ign curves w/o having to send the mpem out an not be down for the turn around period. Does anyone have one or know what all they can be used for?