Finally got my WB2 working!
I installed it a few weeks ago, but the wire came loose of it's holder and burnt against the catalytic converter.
But now it's fixed, and I took the car out for a spin. The most obvious thing is that the car is in desparate need of a tune. It varies under accelleration from about 11:1 to 13:1, where it's commanded to be at 12.5:1. But the biggest concern for me is when I let off the trottle. At WOT, when I let off at around 4000 rpm, it goes to 10:1 (or lower, WB2 is at zero volts at 10:1), and the engine pretty much dies for a second or two. Is it normal for an engine to go so rich? If not, where should I look to tune that out?
At the moment I have closed loop with the MAF, and PE at 12.5:1 coming in at 2500 rpm & 85kPa. Thanks!