A couple days ago I finished street tuning. My tune from last year was ok but not perfect. Now I swapped injectors and did full exhaust, so I touched up VE. OL AFR error was less than 2% in normal drivability range. With the table copied in to the stock form closed loop (LTFT and DFCO enabled) the car now drives like shit. It gets worse the longer I drive it since the last flash. WB drifts way lean at times during normal driving and nearly stalls approaching stops. Im tempted to disable LTFT if not closed loop entirely.
The attached scan file recorded the MIL tripping on, fault is lazy B1S1 o2. I know majority of scan is limp mode but the afr drifting baffles me.
Thanks for input.