Routing CAN cable and pressure lines there from instrument panel was quite a job but it ISU works flawlessly. I also changed radio and variometer speakers to ones with magnet-shielded driver (you would be amazed how much better your radio and variometer sound with proper driver/speaker instead of those made with chinese 5c parts).

krasw

Please provide make and model numbers of the magnet-shielded speakers you used with your Butterly vario.