hi all-recently bought 3 door-running level 8 orange ticket ecu
chip inside has no lable but a wee globe window on it
car has lambda sensor wired into harness[new harness]
car has greens/stage 3 tune 200 motor etc[was cosy travs off here]

how do i tell if car runs closed loop-or do all the later level 8 ecu run with lambda feedback under slow condtions