Here's a link to the Oz Surf forum on the boost compensator -
Toyota 4WD Surf Owners :: View topic - 2LT Boost compensator
I only know of one govenor in the IP from drawings I have looked at (I've never taken a pump apart). The govenor on my Denso Toyota 2LT allegedly runs up to about 1700 rpm and then stabilises at a base line flow for the pump.
I've never tweaked that adjustment as you have to take the pump off to adjust it. It seems to be oriented to getting a richer mixture down low for starting and taking off. I could see someone reworking that govenor to smooth in the transition to boost.
On my vehicle that transition is fine as I am getting some boost by 1300 rpm and I can get full boost by 2000 rpm.
If you know of any tricks to that govenor, or to something else you know of, please log on to the Surf site and include them in the Boost Compensator thread.