l-jet characteristics

[ants]

Hi all,

I have an Alfa 2.5V6 with Bosch L-Jet engine control. All this talk about 
fuel shutoff at overrun (well 2 posts anyway), got me to ask the question: 
Does L-Jet have this feature?

Also, does L-Jet have an idle control speed set point? that is, when a load 
is present on the engine (like air-con, etc), does it try to speed up the 
idle to compensate for the load? I know it has the idle air bypass (IAC?) 
but isn't that just used on start up?

If it has the idle speed control, is that set anywhere? (apart form the 
idle speed screw on the throttle body).

Thanks for any help and for setting me straight if I am way of the mark.

Anthony
Sydney, Australia.