hi Ben m8..
Porkers system is a cross bvetween phase shifted vvt as seen on the 172, and vtec as seen on the honda.
It is 2 stage phase adjustable - not constantly variable -
It also has a 3 lobe cam with a large upturned bucket follower. the follower normally rides on the outer 2 (equal size) lobes for power, but for low speed and idle a centre hydraulic portio of the follower can lift to contact the slow cam (less duration - and about 3mm less lift)..
I think the term continuously variable is poetic license
but, still nice
Joe.