I know this is the 1LE section, but us ZL1 owners are trying to defeat this too.
Mephis - 2 thoughts - see if there is something in there about changing the timing of HSA. If we can set it to Zero, it's effectively off.
There may be some sort of code, much like resetting the Oil Condition Meter where you have to press the accellerator 3 times with the ignition on.
where did you order the manual from?