Installed it at the same time as a GPYes and both seem to be working well in ground testing with WingX Pro. The AHRS is a great addition and the fan is much quieter. I like backups when I fly and this entire Stratux to ipad system has so far been a dependable and cheap way to bring in so much more info to the cockpit. Now if someone would just come up with a chesp ADS-B Out solution.