Originally Posted by stewarch

Had recent problem with 600RR which has the HISS. Owner lost his one and only key. Replacing direct from Honda is EXPENSIVE. Quickest option was to replace with ECU with new ECU which had HISS disabled. We then had a key cut to fit the barrel. HISS is now disabled but the alarm light continues to flash giving impression that HISS is still enabled. A quick, cheap and effective solution.