I engine brake with the key off all the time. My CRX is the same as PaleMelanesian's, pretty much any time you engine brake over 1000 RPM, it cuts fuel. You can feel it surge slightly when it slows back to around 1000 RPM. Also, the steering isn't locked on mine until you click it back the second time, but on my S-10 it locks at the first turn back.
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