Possible dumb tuneboy question?

In my brief experience here I have been both enlightened and confused. All have been most willing to help with my newbie questions. My question is has anyone modified the A/F tables to keep the engine in open loop at all times as opposed to deleting the O2 sensor and what was the result?

Doesn't seem to work quite right. Nev Lush as tuner in Aus recommends also installing a O2 bypass plug from dynojet in addition to disabling the O2 sensor in Tuneboy just to make sure.

More info in this thread... http://www.r3owners.net/bearclaw-corner/1727-tuneboy-finally-does-open-loop.html