Report 5cyl staged injection in G4+ Posted August 4 27 minutes ago, Adamw said: Yes, the secondaries will be fired in group fire mode every 360deg. Injector drive 7 & 8 alternatively. So Inj7, then 180 deg later inj 8, 180 deg later inj 7 again etc. So how you pair them up doesnt matter. I would probably do 6&9 together and 7/8/10 together, this will spread the fuel pressure pulses in the fuel rail a little more evenly. Great, thanks!