Back out at the hangar today and some real progress made.

Even though I am still having to "pump" the throttle to get the RPM down
after having the throttled advanced, I do have the rpm and manifold
pressure down.  I cannot find a leak, HOWEVER, when y'all (Bill I think)
mentioned my new injectors it dawned on me that I installed the new
injectors and then cranked it pretty much right up to see if it would
even start.  From there I started playing with it.  I had meant to reset
everything and start anew. However, I got caught up in the process and
never got back to a base.  So, today I reset the EC2 to the factor
setting and started it up and it ran even better.  Did the Mode 3 (at 22
inch manifold pressure), 6, 2, 1 thing.  The engine is running better
than ever.  I have the manifold pressure in the 12 range.

I am concerned about some sputtering that is present around idle.  It is
generally pretty smooth, but sputters too. Not sure what is causing it
yet.  Thoughts?

I still have some inconsistencies.  Today, I was running the engine at
idle and everything seemed fine. It was idling at about 1500 rpm.  I
looked away and when I looked back, the rpm was reading about 3300 rpm.
Nothing had changed and the engine was still running at idle but the rpm
was showing 3300, MP was 12.7.  I increased the throttle to see what
would happen and the rpm shoot up to 8000 rpm.  What the hell?  I kept
playing with the throttle and it continued.  I shut down and restarted
and it continued.  Shut down again and grabbed a soda, came back and
fired it up and it was showing normal again.  Hmmmmm?  I checked grounds
but am not sure which wire to check...guess the one for the tack, but it
is difficult to check when it goes away on its own.  DOH?  I will have
to keep an eye on it.

Also, even when the MP is below 15 and the secondaries should not be on,
if I shut down the primaries the engine still runs.  Shouldn't it quit
if I turn off the primaries since the secondaries should not kick in
until the staging point?  Maybe this is too basic, but what am I
missing.  Do the secondaries turn on automatically if I turn off the
primaries as a safety featur????  It seems as if I may have read this
somewhere, but I am not sure. I know the switch to the primaries and
secondaries are wired correctly for the power and do not understand why
they would run when power is removed.

Next, in the documentation for the EC2, the diagrams and part of the
text it shows that most of the wires should be run using 22 and/or 20
AWG wire for the connections.  However, in ONE place in the document it
states that the power wire to the coils should be 16 AWG.  Dang, I just
rewired these down a special conduit using 20 AWG.  Do I need to redo
them with 16.  My concern is whether the larger wire will fit down the
tube.  I am not sure what is the most current documentation (btw, they
differences are in the same manual)  Currently the 20 seems to be
working well and I would prefer not to have to change them again,
however, I do not wish to have a potential problem looming that surely
will be easier to remedy now than later.  This is about a 15 foot run in
the Velocity. BOB?

Finally, for today anyway <g>, while my EM2 seems to be giving me good
solid data, I do seem to have a problem with my mixture indicator.  The
little bar graph jumps all over the place and gives me no real solid
indication.  While I am pretty good at tuning by ear, it kinda defeats
the purpose to have this great technology to be able to get some precise
measures, if my key indicator is not giving me what I need.  I have of
course checked the wires and even replaced the OXY sensor in the
exhaust.  Thoughts.

Oh, a final comment on progress.  My cooling continues to impress me.
The bigger rad/fan and oil cooler is able to idle and even take some
power for some amount of time allowing me to fiddle with things.  To
REALLY illustrate the point, take a gander at the attached jpeg showing
the ramp temperature this fine Houston afternoon....ok, in case you
cannot open the file, it was 112.5 on the ramp and 100 in the shade.  I
was still cooling <g>

Also, here is a shot of the weird RPM, being much higher than is should
be, with a low MP.



Thanks guys and gals.

All the best,

Chris

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