Not sure what's going on and my tuner is having no luck keeping this thing stable. It will run good with a new tune then it will go rich again. The stft are from -3 to +3 cruising around and will occasionally go richer on decel. The ltft go between -13 and -21 but will lean up on decel as the stft richer up by roughly the same. The wideband is in the 14's most of the time but will head towards the 11's under accel and in the 12's in decel. This has been this way since I got the motor and now I'm running sd headers, gen v with a 3.5 pulley. I've tested for leaks and nothing shows up and my vacuum is in the low 20's.