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Originally Posted by redpoint5
So-called news is really just entertainment with some facts (truthful or not) thrown in. I've found mainstream news is either factually incorrect, or several years behind in knowing something, which means it's entirely worthless to me.
EngineeringExplained had a recent episode describing the phenomenon of rev hang during shifting on modern manuals. It has to do with meeting emissions requirements.
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I suspect, the CPU has a vast look-up menu for responses, based on sensor data and clock time, altering stuff like ignition timing, valve timing, lift, duration, EGR, air-fuel ratio, etc., to satisfy conditions of the original EPA certification and compliance. Even my analogue 1984 Civic would do an overrun between shifts at times.Very disconcerting at closed-throttle, attempting to engine brake on a downhill stretch.
