MGL Avionics User Forum

I've got an EFIS Xtreme and RDAC XF installed in my Yamaha powered Zenith 701. So far I've only done a few run-ups of the Yamaha Apex engine. All EMS gauges monitored worked fine (FP, OP, COOL TEMP), at first, however the other day, the CT gauge "disappeared" to be replaced by the OT gauge. In the E...