Originally Posted by
Ztuned
Mine did the same thing. Actually still does. It is getting better. I've noticed that the clearing the adaptives via VCM scanner must not completely erase all remnants of them. After changing tq friction several times, 1 bank wants to add 15+ fuel. I disconnected the battery and discharged any power left in the ECM, and now both 02 sensors are updating very close together. Fuel trims are also now within 1% +/- of either bank. ETC relearn accompanied with this also appeared to be key. However, not for the faint of heart. ECM will default back to preprogrammed fuel trims... saw+32 on both banks for a few seconds, but everything adjusted just fine.