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I believe I saw where the manifold pressure sensor is a GM or Delco part. I have a EMS 120 in my 2008 CTLS. I need a part number for the sensor. Thank you.

Problem solved. The NMEA output was off. thanks guys.

I upgraded the firmware on my garmin 496. The 496 is working ok but now have lost conection to my Efis D100. No windsock etc. I also lost gps conection to my CT flyer autopilot. What happened?

OK about updating the firmware. I have a D100, a garmin 496 and CT flyer autopilot with my D120 all wired together. Does upgrading any of the firmware in any of these devices remove any of the settings. I have not upgraded in fear of screwing something up. (I do upgrade my GPS data.)

Thanks roger. I had a "steady" reading for 2 years and this behavior just appeared. I have a video of the D120 showing the needle jumping around with just the master turned on and the engine NOT running. I can email it if you want to see. PS. I do get on the CT forum. Great site.

UPDATE... I found the sensor mounted on cabin side of firewall behind the D120. We wiggled all wires and connections to the D120 and no joy. The needle still jumped around like crazy. I went into the menus and turned off the view of the MAP display on the screen. Looks like a sensor problem I...

Turning on before chanking the reading on my EMS D120 jumps up and down and pegs alot. Where do I need to look. Also erratic after chank up. Can I disable the map reading till I can get it fixed? I have a rotax 912-ULS. Is it going to hurt anything (short out burn, fire, etc). THis started after...

Where is the best spot to disconnect the keep alive wire on the D120? Inside the 37 pin connector? Do you remove the #2 pin with the yellow wire or just cut the wire? Is the keep alive on the D100 also the #2 yellow wire also? I have a garmin 496 to keep time. I assume the keep alive wire is not...