I'm not offended. If my data didn't follow the science, I'd kick my own ass.
Here's an example of what I measure for short pulses. This was on a set of BIG injectors (~1600cc/min @ 4bar).
SPA capture.JPG
Notice how they actually behave pretty good down to about 9mg/shot. Below that, they diverge as the only measurable point I could grab was at 1.0ms and less than 2mg/shot. Even that point was a little noisy. We wouldn't really want to operate there if we can avoid it, but with the right short pulse adders lining up down to that point, we could theoretically be OK in the ~6mg/shot range. But even that is well below the typical idle fuel mass requirements, so it's kind of a moot point.
Arguing about short pulse adders for masses below 2mg/shot on this injector is ridiculous. We wouldn't really be there. So it doesn't matter if I use the same 0.225ms adder or a zero below that point, we're still not going to get any consistent fuel mass from the injector.
Here's the same graph from a stock LS3/LS7 Injector:
LSA SPA.JPG
Again, see how they're pretty linear all the way below 5mg/shot(1.2ms)? The injector basically didn't open at all at 1.0ms. We use the short pulse adder table to interpolate between these points (and make the TINY corrections between 1.2-4.0ms), but the practical application says that it's not that critical in this particular case.
Yes, there are other injectors out there with more non-linear behavior than these two examples. By running the same tests, we expose that and calculate the necessary SPA numbers. Yes, there can be a variation between the "average" data for a part number and one particular set of matched injectors. If that variation is of concern, the solution is to have your exact set tested and get the data for them rather than using the population average. It can make a bigger difference in some cases than others. Since I own the bench, of course I prefer to use the EXACT data when tuning my car or something for another client here in person.
YMMV
...meanwhile, Mike's car is making solid progress on remote tuning. Not my favorite way to collect data, but we are making big strides and will probably have it running well enough for him to drive it on road trips soon.