Here's what happened. I had my car set at around 12-13.1 for most situations. My aem wideband had the oxygen sensor go bad, and it was a few weeks before I got around to replacing it. I threw the new sensor in today and started the car, it idles fine at around 13-1 but any time I give it gas it runs off the scale rich, below 10-1.

What could cause this? I've checked everything I could think of engine wise.
I wouldn't think the sensor would be bad since it's reading normally at idle.
I've also done the sensor test on aem's website and it passed.

Is it possible for the sensor to be calibrated wrong?

 

Do you have to calibrate the sensor to the wideband?

 

Not that I'm aware of.

The only thing I can think of, is that I replaced my optima battery that ran at 13.6v with a different battery that runs at 14.1v. Is it possible that with a few more volts the fuel pump is pushing a few more psi of fuel through the system?