ZZP'* web site says...
We buy injectors 100 at a time from the manufacture. By nature of production variations, not every injector will flow the same. They average within 2% but at times there are larger variations. When we send them out to get flow matched they flow a group of injectors individually and then group them together based on similar flowing injectors.
That sounds like all injectors you buy flow with in X% of each other.
WBS'* website says..
Flowmatching is now a free addition for all injectors. Each set of injectors includes a flow sheet for optimized tuning.
This leads me to believe that not all injectors don't flow within X% of each other. But sounds like the sheet says what each injector flows and you can tune each injector individually to have equal fuel in each cylinder.
The best thing to do would be contact each vendorí* customer service and see if they can answer any questions you may have.
You missed INTENSE'* weekend sale; they had the Siemens 60 (65.0) pound/hour injectors on sale for only 197.99! I was lucky enough to get a set before they sold out Friday night.
1998 SSEi The Executive Hauler
Built Trans w/ 3.29s, P&P Jenny 5, S1X cam, Silver TOGs, Northstar TB & LQ4 MAF, FWI, Dyno tuned, #60 injectors,Oil Pressure Kit, 2.9-3.4MPS, MagnaFlow exhaust, 3" HF cat, MSD Coils & 8.5mm Super Conductors, AeroForce, only Sunoco 94, 100