As Woody stated in the above post... Yes, unfortunately both the 02 sensors and MAF are tied in together in the grand scheme of fueling and timing on the Crossfire, so by just altering one, the other will nullify your efforts... So, to do this properly, you must alter the signals simultaneously...

We were just testing the effects of manipulating the 02 sensors alone, and it has been determined that the secondary sensors play a minor role in setting the switching point of the primary sensors which can control fuel trim to a certain extent. But, without simultaneous MAF adjustment, the timing dwell will choke or starve the engine.

I'm sure Woody is in his MAD SCIENTIST LAB cooking-up another box that has one more potentiometer for the MAF. I hope I get to test this one as well.