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How fast does the G3 notice a digital input logic state change?

Lyndon Sharp

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Map switching would be done off a GP input so switching would occur within 8ms.  Remember that the new tables fuel value cant be used until the next engine cycle.  One engine cycle at 15000 RPM takes 8ms so as far as tuning is concerned the maps will switch immediately...  Interrupt response time is in the nanoseconds range but processor data sheets will not tell you how much code has to execute and other events that must happen before the effect of your DI switch will be seen...

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