Im tuning a Delphi MT22 factory software..........it was setup from stock (Great Wall), to be in closed loop almost all the time. It explains why its acceleration was incredibly mediocre.
In order to run in PID mode you must have wide band O2 sensor and ECU which is able to read it and PID is actually closed loop with PID optimization, am I right ?
@@AndyWhittle_HowEFIworks Fair enough. Thanks for the reply. I've been running no correction for a long time with cats. They still work fine but now I'm concerned about longevity. Dual high flow metallic magnaflows. If it's just about efficiency then I'm good. Still pass the sniffer. Any chance at a PID video for EGO and idle?
@@exidous6831 they do not need it actually but when the whole system was invented the only lambda sensors available was the narrow band one and because of their reaction ( they shows only lean or reach mixture ) all the algorithm with short and long term trims was created around that behavior of narrow band lambdas . Catalytic converters work perfectly with stoichiometric mixture but since the the lack of fast reaction times and two position output of the narrow band lambdas the air/fuel ratio oscillate around the stoichiometric one . The oscillations must be fast enough and the periods when the lambda read reach and lean to be equal in order the average premixed a little bit lean and a little bit reach exhaust gasses before the catalytic converter to be as much stoichiometric as possible .Here one good video on catalytic converters ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-HADOcrcMikA.html BTW narrow band lambda ,catalytic converters and ECUs was used even in the pre fuel injection era , on so called electronically controlled carburetors which was a predecessors of mono injection systems .
