"You will just need to change "Map A: Run A/F Param - Displacement/inj flow rate (Litres/Grams per sec)" to accomodate the new flow rate and fuel pressure. Usually its best to keep stock fuel pressure and then adjust the current value up or down in the tune by the % change in flow rate to begin with, then verify with the wideband and tweak to suit."
So is it best to run the 777s at 3.5 bar or at 3 bar? I am thinking of using a 3.5 bar regulator and just changing the tune to suit the slightly higher flowing injectors...
VT - VY V6 run the 777 @ 3.5bar
VS V6 runs the 973 @ 3.0bar
they both flow practically the same, only 6 cc/min difference, but if you run the 777 @ 3.0bar then they will flow less. So if you want to run the 777 make sure it's at 3.5bar and just copy the injector battery offset table over from a V6 tune to the V8 tune and should be good to go.
I had a similar issues trying to do the conversion with some errors coming up because the Gm/s or lbs were not defined if they were heptane or petrol for either stock or those injectors and multiple stock figures depending on source of the data varied some amount too.
In the end my final figure and effort was all in vain, the VE of the engine was double just about over stock so I needed to bring the injector rate back to stock values (about 2x the value for the same injectors) so it didn't run at like 30:1 (estimated) AFRs lol
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