Have a 2001 corvette. BTR S3 cam swap. Fueling in open loop is looking pretty good on the wideband. When I turn closed loop on STFT B1 goes VERY rich...all the way to the point of adding 50% fuel and wideband shows 10. Run it in open loop and it's around 13.5-14.5 on the wide band.
02 sensor issue?
Tune and OL and CL logs attached. Disreguard the wideband AFR in the logs. I don't have the data going back to HP tuners. Watching on my external wideband.