[s-cars] VMAP question

[manuel]

Listers,

For the newbies to Turbos, URS cars and mods to ECU's, would someone care to script a primer for those of us (maybe just me) who don't understand some of the basic knowledge that those more experienced list members have. For example, could someone give a more in depth definition of VMAP?  A guy at work has waxed poetic about boost controllers (he's got a new EVO) and while I have had the pleasure of meeting Pizzo for a few days at one of the driving schools, I am unable to detect whether his last response was a bit sarcasm.

Thanks.

-m