I have the shadin in mine connected to my GTN750 very accurate and happy with it.
Just picked up my new 66 and want to get the fuel flow sent to the gtn 750 as well. Do you happen to know what flow sensor you are using? thanks
Brad here from Shadin Avionics. We have an STC'd fuel flow solution for the R66 that interfaces with the GTN units. Please take a look here for more information:
Feel free to contact me if you have any questions or comments: