Exactly as the title states. What is the normal or ideal wideband o2 AFR reading when idling at 750 rpms? I searched but got nothing. On my turbo swap, fresh rebuild (profile is current), brand new AEM wideband installed on the downpipe, after the bend, before the flex. Super lean with factory injectors, 14b, no tuning device at idle. AFPR is set at 37 with the hose off Timing is 5 BTDC Idle is 750-800 AFR is 17 to --- Is this good or bad? When I drive the AFR falls, haven't been WOT or even over 2500 rpms yet. I need the rest of my exhaust before I can take it on the roads.