Re: HFS-4 Q&A, application for your engine...
here are the setup calculations I used.
From what I gather stock injectors are 575cc @ 5bar.
So 575 x 6 = 3450 cc
3450 x 15% = 517.5
3450 x 20% = 690
plus 10% for system pumping losses=
(15%) = 569
(20%) = 759
divide by two for two jets = 379.5
operating pressure is 160psi subtracting boost pressure of 1.4 bar (20.3 PSI) = 139.7
referencing the chart i come up with .9mm (M5.3) jets.
please confirm my calcs.
thanks
Jon
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