My 2JZ 183" turbo engine (perhaps 20 psi, .60 BSFC?) has 6 X 550cc injectors for about 520 hp.
If the fuel pressure is lower than the usual 43.5 (common value for stock pumps), that reduces delivery rate significantly.
Rate change:
(New psi / old psi)^.5
Going down from the rated 43.5 psi to (example only) 30 psi:
30 / 43.5 = .69, ^.5 = 83%
That would take your 1,400cc to 1,163cc equivalent with std. pressure.
Seems harmless to try it out, you're not going to cook anything!
