first gen injector pop pressure

Only time I had a set of injectors changed pop pressure on with nothing else changed was with some crappy 7-hole ones. Seemed to my seat of the pants dyno that they had less power with the pressure up but they ran a bit cleaner.
The 7-holes seem to run out of steam on the top end. May have been related to penetration once the boost ramped up?
ID guess that this delays the start of the injection event a little, no idea how much. Probably good with higher boost numbers and higher timing?
 
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