I am still having problems = with Controller "B". When I switch from A to B, the engine = seems to want to stall, since the engine will not restart for a few hours (so = far) after a run I flip back to A before this happens. At higher RPM I can = make the switch between controllers and it does not stall, but runs significantly rougher. Could this just be due to the Auto Program refinements = not yet being transferred to "B"?

Yes. If you feel that the = changes you have made on A are a definite improvement; do the A to B copy – = mode 2, power off, hold the program button while turning power on, continue = holding program button for a couple seconds.

Can you now display your mixture = table? You may first want to review that and see if the profile looks reasonable = – nothing that is clearly out of line with it’s = neighbors.

When I disable the = secondary's I did not notice any change in the way the engine sounded, but when I disable = the primaries the engine would start to shut down...

If you are running below the = stage point, the secondary are not on, so disabling them would do nothing. = Turning off the primary I believe should cause the secondary to turn on; and if = that shuts down the engine it would suggest that they are causing a much = richer or much leaner condition. When you switch off the primary you could try to = quickly richen or lean with the mixture knob to see if you can keep it running; = telling you which way you need to go with mode 6.

Anyway, I decided to put = this to the side for a moment and I pushed the throttle to WOT. WOW, the temps = rose pretty darn quickly at full throttle.....the temps were staying around = 150 ish at idle and the lower RPM, but really soared at full tilt. The = displayed RPM on the EM are still jumping all over the place since I have not = addressed this issue as of yet....flickers from 2000, to 4800, to 1200 back to = 2000, to 4900 ish with a few numbers in what I think in the correct range = predominating the various numbers. I was a bit disappointed that the highest = number I saw with WOT was only about 4999 ish. Seems low. Is the fact = the engine only has a few hours on it and or is still not tweaked a reason = for this, or is this expected sitting half in, half out of the hangar....yeah, the = prop bit is outside in the sunshine <g>?

Yes, full power will heat things = up in a hurry in a pusher where the prop blast is not assisting cooling. = Do you have an auxiliary fan on your rad? I found I needed = one.

Finally, for tonight = anyway, back to the injectors. After my data gathering run was complete I went to = the diagnostic mode on the ECU. When I tested the injectors as if they = were firing at 3000 rpm I disable the primaries and could clearly hear the secondary's clicking away from inside the cabin. When I disabled = the secondary's I couldn't hear anything until I stuck my head outside the = cabin. When I went around to the engine I could clearly hear the primaries = clicking away, but at a MUCH reduced volume of the secondary's. Does this matter. Do the two different types have this significant of a = sound difference? Could this explain the about mentioned shutting down = with the injectors were turned off during the engine run?

It could be significant; but = perhaps not. Two different injector sizes, mounted in different places = would likely make them sound differently. I wouldn’t be too concerned = about max static rpm until you get the thing running properly over the = range. What size and pitch prop do you have?

Hang in there – these = things take tenacity and patience.