Base fuel pressure adjustments

[asshanson]

I have a question about how different base fuel pressure affects the need for global injector compensation, in this case I'm tuning with DSMLink.

Consider the following situation hypothetical, I haven't changed anything since Shane tuned my car this summer.

My 2g has 43.5psi base fuel pressure, quite a bit higher than the 37psi base for a 1g manual. Since I have more than enough injector for my setup, I could *try* and get more out of my pump by putting more load on the injectors, and lower the base to 40psi (about 8% lower).

1) Does this mean I need to raise my global injector compensation approximately 8%, or does it not work like that? If it does work, will this global compensation take care of the necessary corrections, or will it act differently under a lot of boost and need a complete retune?

2) Will lowering my fuel pressure actually let me get more room out of my pump if I ever max it out? Have 2g owners like C3L1CA who maxed out their single 255 pump tried this?