MSefi.com read only forum (Jan.15,2018)

I am investigating doing this on a v12 and have made a mod on the v3 board to the input of U4 so that both injector driver circuits are used. I've hooked up a small DPDT relay to send PWM0-1 to both pins 2&4 of U4 for petrol and PWM1-1 to both pins 2&4 of U4 for LPG. You could equally do this with a ...