Thread: Injection Phase Angle Question For Corey Or???

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Originally Posted by jerry clayton

I'll try to pass it on to him over the week end----

Good deal! Explain to him that the point of reference on mine is the crank rotation point where the injector closes, and this is sequential port injection, not throttle body. The ECU determines the opening point based on the programmed fuel need and rpm, knowing that the close point is fixed. Some systems define Injection Phase angle as the point where the injector opens, but mine is the close point. My intakes close at 40 ABDC, and I'm wondering about optimum injector timing.