Calculations for new injectors
Posted: Mon Jan 08, 2018 3:00 pm
I'm going to change the injectors on one of my cars as they are just about maxed out.
They are 241cc (@ 3Bar) x 4 but installed and running @3.5Bar
I want to change then to some I have
359cc x 4 and reduce the fuel pressure to 3.0Bar
I'm thinking that the fuel pressure reduction would need an increase in injector duration of 7% to compensate.
And the increased injector size would require a 49% reduction in duration.
Therefore a total duration reduction of 42% across the map would leave me with the same fuel into the engine.
Does that sound anything like right?
They are 241cc (@ 3Bar) x 4 but installed and running @3.5Bar
I want to change then to some I have
359cc x 4 and reduce the fuel pressure to 3.0Bar
I'm thinking that the fuel pressure reduction would need an increase in injector duration of 7% to compensate.
And the increased injector size would require a 49% reduction in duration.
Therefore a total duration reduction of 42% across the map would leave me with the same fuel into the engine.
Does that sound anything like right?