...fuel-injected cars are allowed to use adjustable fuel pressure regulators...[/b]
Good point. I was not thinking as broadly as you are. Given that the CPR *is* a fuel pressure regulator, and there's no limitation to WHAT "fuel pressure" you're regulating, I now agree that there's no problems with modifying the CPR or the fuel distributor's system pressure regulator.

In fact, taken REAL broadly, the whole damn system is one big pressure regulator, including the popoff pressures at the tip of the fuel injector (he says, with an evil, scheming grin on his face...) - GA