According to message 31900 from Ed Anderson, the RV flights UAO-EUG-UAO were flown at 150 knots, so I added that to the table. I would rather be able to control mixture in flight. I built a circuit that intercepts the airflow sensor signal and manipulates it with a variable gain amplifier controlled by a pot. It also has a switch so I can defeat the whole thing and route the airflow signal directly to the ECU. And it includes a digital voltmeter reading the voltage on the O2 sensor. It has been in my RX-7 for the last year and works great. I just need to transplant it into the airplane. With the price of fuel now, I guess that should be a motivator to get it done. Al wrote: Perry, you are running fuel injected right? Why not just turn down the fuel pressure? That's the trick the guys do to reduce full throttle fuel usage. The computer goes into open loop at
WOT, so turning the pressure down reduces fuel use at that time, yet computer learns new settings for partial throttle conditions. Just turn pressure down 5% initially.
-al wick
Artificial intelligence in cockpit, Cozy IV powered by stock Subaru 2.5
N9032U 200+ hours on engine/airframe from Portland, Oregon
Prop construct, Subaru install, Risk assessment, Glass panel design info:
http://www.maddyhome.com/canardpages/pages/alwick/index.html
Some accumulated MPG data, readers please add more if you have it. I'm attaching this as a textfile so the columns may not line up. I might resend as a GIF if it doesn't turn out right. Doesn't that 32 MPG RV8 sound a little too good to be true?
Must have been flying at maximum range speed, whatever that is. 
mpg.GIF
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