Searched around - want to confirm what I think I figured out...
1. Can you perform a static test on a fuel injected engine? Seems to be possible and seems to give reliable results.
Yes, this is done all the time. The only time static tests are inconsistent is
A) ECU programming interfering with the test (typically modern factory programming)
B) Turbo or supercharged engines with variable fuel pressure systems.
C) Imminent component failure (IE: Bad spark plugs) 2. (After testing and operating at 25 hp then installing larger jets) can the test be safely performed at levels above 25 hp? Seems to be yes - but the acceleration will occur more quickly.
That is correct and it takes considerable experience to tell when you're in the ballpark without over-revving.3. Is the jet spread ratio fairly constant as the jet sizes increase? (assuming fuel and nitrous pressures and flow are maintained)
This is also correct. The ratio shouldn't ever change unless something has been modified on the car. Converting from dry to wet -- trying to get a few things figured out in advance!
You'll find it to be easier and more reliable to deal with wet than dry so it's a good move on your part. 
Thanks!
Chris
