A/F/R gauge for tuning

92b said

I'm not going to say that is impossible but I think with the information provided that conclusion could be a bit of a leap. Unless you have more data to support that conclusion that wasn't in the post. How was it determined that the motor was lean to begin with? On the first carb did they try unpluging the mixture control solenoid and jetting the carb up to confirm that the motor was lean? Were they using et as their measuring stick for improvement? More details on this test please.

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I can not remember all the details, but the engine would lay over like it was lean and the plugs confirmed. Jetting, drilling air bleeds or whatever they did had no effect due to the computer correction. Unplugging the fuel solenoid; I have no idea if it would go rich or lean. This was all in the articles documenting the build.
I would have had the articles if my ex weapon had not tossed a bunch of my books and magzines during separation.
My understanding of the Holley replacement was that it was like the Edelbrock Q Jet knockoffs, but it had the feedback feature built in like the original. If they had not modified crap out of the original Q Jet, it probably would have functioned with the shorter Engle cam. Remember that the early EFI systems all had PROM chips which had to be replaced with another with a tune burned on it. PROM; Programmable Read Only Memory. Later came the EEPROM chips; Electronically Eraseable .... These did not perform anywhere like the current flash programmable ECU's in use today.