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t vago - this is where I think you are a bit confused about how it works.
The systems I have installed (look up Racelogic Traction Control) are aftermarket not factory. They only cut injector pulse, and not the same injector and not all the time. The misfire is so soft that it is not easily detectable. Most 90's and early 00's ECUs have no source of feedback to detect this type of misfire. More modern stuff may have but not all cars will - so there is a need to test which.
Please note I have great respect for your opinions and knowledge, and I agree with all the thermodynamics points that you made, but. You have made some sweeping assumptions about the operation of many ECUs and the programming logic behind them, which is unlikely to be borne out upon close inspection.
I have never had an install throw a fault code with this tech - sorry!
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