With most modern avionics you will use that third port for your MAP sensor, so don't cut it off.
I've used the 3rd port for the MAP sensor in my RV-10.
- but then there's that FF1-6 plans detail showing a MAP hose run to a hole in the firewall
I guess it's a matter of preference?
I dont believe i have ever seeen a MAP sensor wirh an NPT fittiing. They usually have a 5/32 hose barb fitting and holes for mounting screws.
larry
Take a look at the MAP sensor included in a Garmin sensor kit. No barb fittings.
I dont believe i have ever seeen a MAP sensor wirh an NPT fittiing. They usually have a 5/32 hose barb fitting and holes for mounting screws. I have never understood why people use steel reinforced hose with AN fittiings for this. Most every car ever produced used 5/32 rubber hose for vacuum applications, includimg the map sensor. Time tested and very reliable.
larry