Did you take into account the multiplier tables, Id data is normalized at a low psi? Just look for where the multiplier is 1 to see what psi they use as a base pressure. Most ford injectors data are 39psi. ID uses 25 psi. the stock tunes are calibrated with a 65 psi base multiplier.
It should not make a big difference only a slight one, but shouldn't be to hard to convert the flow rates and get more resolution from 50-70 psi seeing as they give you 20 to 70 you can get a plot from. 50-70 psi is where your rail pressure will be so that where you want your multiplier resolution. ECU may be happier and return less error not having to use the large values in the multiplier tables to get the flow rate at the actual rail psi. Converting from 25 psi to 55 is a big jump. Renormalizing the resolution makes it so 70-50 its using a multiplier of 1.03-.91 instead of 1.7-1.5 (roughly) and gives the multiplier values a slight curve as the data sheet indicates instead of being just linear interpolating one cell to the next.
Hopefully you can follow along what I did in the sheet from the screen shot. This only shows what to do for the hi slopes, not the low, breakpoint, or offset.
Hi slope and multiplier renormalized.PNG