We have an HKS 1000cc Injectors on our Evo 8
It has Precision 6466 Turbo on it
We also have a Full Blown Dual Hanger (dual walbro 255lph)

When we went out for a tune, we maxed the injectors at 1.2 bar which seems kinda low
So we started looking for the problem

We had 4 bars of Fuel Pressure. We were told that the HKS 1000cc injectors only flow 780cc at 4 bar Fuel Pressure and it flows 1000cc at 6 bar FP

Is this true?