Opening the top of the IP to make star wheel or boost pin adjustments will not screw anything up internally. There is no fuel up there or anything to affect the pump internals. All you will do with that is change how boost affects when the fueling comes on (star-wheel down equals less spring pressure), and how much you limit the fueling on boost (position of the boost pins slope).
Ok so turn starwheel down boost fueling sooner. steeper pin setting more fuel sooner?
The Bosch VE pump like the one that came on the Volkswagen 1.6 Turbo Diesel, is virtually infinitely adjustable.I go balls to the walls on all my pumps, want less power? Give less pedal .
It would be nice to have increased fueling on demand rather than just waiting for the turbo to build. I doubt if I would use it but who knows.