[dan_xr4]

Check the fuel pressure that your new injectors are rated at. The RC fuel injection injectors are rated at 43.5 psi (3 bar) not the 39 psi (2.7 bar) like the production Ford brown top injectors.

With bigger injectors I would change function FN303 WOT Pulsewidth Multiplier as a function of engine speed to be all 1.0s. I don't think you need the extra fuel that the production calibration provides at WOT. The table TBL004 is already calibrated to an 11:1 air fuel ratio, which the larger fuel injectors will now be able to achieve. If you want to change the fuel mixture, I just use TBL004 and keep FN303 WOT Pulsewidth Multiplier at 1.0

With bigger fuel injectors you should also reduce the function FN4FC Cranking Fuel Pulsewidth as function of ECT. This is mentioned in the Qhorse Excel spreadsheet.

You might be able to get the VAM to read higher air flows by increasing the spring tension. However you will need a whole new VAM function FN1038 calibration.

[TurboRay]

Yes I'll need larger injectors.  I would prefer that rather than adjusting fuel pressure.  I found 55 lb/hr low impedance injectors as the next size up from the 35s I'm currently running.   

You can harvest 46pph & 52pph low-z injectors from mid-80s 302-powered LTDs & Marquis'. HERE is a link to an article I wrote about harvesting an adjustable FPR from those cars, which also have the aforementioned inj's.  <shrug>

[greg bar]

Im running stingers fuel log. I have a remote fuel pressure regulator i.e. not mounted on the rail. Its a Mallory 4305M EFI 30-100psi. I also have a pressure gauge to read fuel log pressure. Im running 3/8 (dash-06) supply and return lines. I not opposed to purchasing new injectors. Ive seen 55s from Racetronix. When I move to larger injectors Ill check pump flow, I did a quick calc and would need min 141 LPH pump.