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killing ignition is always a bad idea
..."I am still thinking how I'll revamp the kill switch.
Killing the ignition is a good idea. However, for now it is working fine. It immediately goes back into closed loop when I restart the engine."...
no it isn't
because fuel will still be going and Mr 02 sensor will see lean condition and command even more fuel , which will drip down past the rings and into the oil
OR
even worse ,flow out the exhaust and burn in the very hot cat converter .
much better to interrupt 12 volt positive supply to the injectors
with a bosch relay as done by another to a Geo Metro in a thread about that very topic .
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