The numbers

jump around on the  EM-2 from 19 to28.  I just took down the ones that

seem to be displayed the most.  Hummm?  Engine running smooth.  This

jumping around has been like this from the beginning.  I have lines

running to ports on the front of the manifold and rear and have them

teed together and then to the EC-2.  Yes, the lines are tight on the

EC-2.  My mechanical gauge is smooth.  I doubt the pressure is

fluxuating.  I think the signal is being distorted somewhere.

 

Don;

It may be that the mechanical gauge is damping the effect of pulses; whereas the EM2 is taking instantaneous readings.  The biggest effect is at idle. If you engine idles well there may be some other issue with the EM2 readings. Some of us have added damping in the system by adding volume and an orifice. 

 

Additionally, When I switch off one of the Injector banks, the RPM

display on the EM-2 goes to 0.  Not NOP.  This happen with both the

Primary and secondary injectors banks.

 

This is peculiar.  The RPM readout should not be affected by the injector disable switches.  NOP should only appear on the EM2 when there is no power to the EC2.  This suggests a wiring problem, which may also explain lack of full power and the decreased EGT on rotor 2 with all injectors on.

 

I  have always had a problem with Controlled B.  It does not seem to

copy from A. 

 

Also suggests possible wiring problem.  Tracy may be able to suggest specific pins to check, but it may be worth double checking all the connections.

 

Best of luck,

 

Al