Subaru Fuel Control with a G1

[Jose Andrinich]

Hello, i have a 1998 Impreza WRX (GC8). I am runing a td05-16g at 20psi, my fuel injection duty cycle is marking 99%, i guess it is on it top. Well i have a G1 possum link ECU, from i think it is a WRX99R and i have 2 different options that i do not know exactly how they work: 1. the first one is a fuel injection pulse (showing 4) 2. the second one is a fuel injection with (showing 150) i want to increase boost to 22psi, also thinking of buyin a bigger fuel pump, but i want to know if this 2 options would help me to have a better injection duty cycle. if any can help me. thank you for your time.

[Jose Andrinich]

I meant

 

1. injection wake up pulse = 4

2. Injectiors pulse width = 150

 

what happens if i change any one these 2 parameters?

 

thank you

[Simon]

Wake up pulse is the number of short pulses that are applied to all injectors at the point wakeup is activated.

Bigger number more pulses

The width that you are mentioning will be the width of the wake up pulse.

Both only apply during accel.

If you are increasing boost you will need to tune the correct areas in the map for both fuel and ignition.