The filter I added to the EM2 seems to have fixed the noise problem.
I have noticed that sometimes when I page up or down,
the manifold pressure goes to 1499 and triggers the alarm.  Also the
various timers don't seem to work right.

Bob;

What sort of filter, and where did you put it?  I have/had various issues,
presumably noise related, with the EM2 and EC2.  More concerned about
changes to setting in the EC2, sometimes coincident with paging the EM2.

Thanks,

Al G