My Innovate wideband O2 install wasn't a success, as I installed the probe after the catalytic converter. The AFR reading appears to be off by a large margin, indicating that the engine is running AFR ~14.7 most of the time. That is not true, as I can see the ECM switching out of closed loop on high load.
I was hoping that I could recalibrate the MAF to zero out the fuel trim values, but I'll remove the wideband for now and get back to it when/if I remove the headers or install long tube headers.
The voltage cut-off also seemed like a good idea in my head, but in the real world it is nothing but annoying to wait 10 seconds for power steering assistance after starting the engine. First there is a delay for the battery voltage to raise above the threshold, then for the power steering pump to wind up. I'll replace the voltage cut-off with a switch...