I just installed a Dynon Skyview system in my airplane with a new SV-EMS220 and I cannot get the Tach to read correctly. I had a D180 in it before had one resistor in the line and the RPM was correct. I am now up to 3 in my SV and it bounces all over the place and when it gets close to reading correctly, it is still 1000 or so above idle. The guy at Dynon told me just to add resistors. Anybody have the same problem or insight how to fix this?
thx
thx