I respect the creativity, but I worry about your engine survivingthis trial and error. That said, everybody probably thought Ben Franklin was nuts when he started flying a kite in the rain... mebbe you'll get a strike of lightning (of course, there's good and bat to that!).

From what I understand of the fuel map, it is a multidimensional curve (oversimplifying more than a bit to fit my basic understanding), and changing airflow just offsets that 'curve' in one dimension, leaving the rest unchanged. If you do this within the 15-25% window of change that the EFI computer can adapt to, your results may be positive. The challenge, then is after you've knocked the map off one way, nudging it back into the window with other adjustments (fuel pressure, injector flow, and so on). The problem is that few folks can truly do this. More power to ya for trying, but be careful, man... running too lean can cause an engine to try to burn more than gas, like pistons. <img src="/forums/images/graemlins/shocked.gif" alt="" />

Hopefully Turbo Dan will see this and comment -- he's designed several turbo setups and a supercharger setup, and has been running his 4ZE1 well outside of sane boost for some time, yet it continues to survive. He's also running a fuel injection setup of his own devising, and has forgotten far more about fuel injection than I think I will ever get to know...

Good luck with this, Xanatos, and I look forward to your results -- but instrument the hell out of this so that you can stay well this side of expensive failures...

Randii