Ive got 3 cars that get kicked out of closed loop while cruising around.
It only seems to happen under steady cruising with MAP and TPS staying constant and at lighter load cruising. Once it gets kicked out of closed loop it will stay in open loop until you come to a stop(get back into idle LTFT cells) or if you push the car into PE it will go back to closed loop once you get back out of PE or if you push the clutch in and free rev the car a couple times it will go back to closed loop.
Does the e38 have something other then then whats on the OL/CL page in HPtuners that affects when CL is triggered?