I'm currently building a pop tester so that I can baseline all of my injectors. Based on the following page from a Bosch Injection Pump manual, it looks like the max nozzle opening pressure for our IDI applied VE pump is ~5000 psi.
Attachment 183
This seems reasonable to me, given the pressure continues to ramp up to around 15,000 psi after the injector opens. I am planning on baselining all my injectors around 2800 or 2900 psi. I'll most likely set the timing to about 1.05 mm to start with, and then try 1.10 mm.
My goal is efficiency, not massive power production. I'm fine with losing 10% power output if my efficiency increases by 2%. I really want to break the 40 mpg mark. I'll share my results with you folks.