I have only had my PV2 for about 2 weeks now and would love to get some extra data from it. Mostly interested in altitude and speed. I wish it would write this information to the SD card, even if it only appended to a file every 1 second. Maybe they will add this in the future. Anyway, so I noticed a few people using the Flytrex. I looked up the howto video and it shows the unit being plugged into the controller as a middle ware device. How risky is this ? Is there any chance this could cause my GPS to freak out and cause a crash ? Will this void my warranty ? (Not even sure if they have one anyway) I emailed them with my concerns but they never responded.