Richard,
Sorry, just a thought. These dual stage controllers have a switch to change fro low to high boost. Couldn't we just wire that switch so that it was effectively on 'low' if any 'failure' signal was received, i.e, no water, no pressure (ruptured water line) or blocked jet?
If so, we could just set our low boost to a safe level that the engine could run at without any additional anti-detonation measures.
Paul.
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