Hi Steve,
Thanks, I agree. To my mind on the vehicles with fuel injection theres a challenge to overcome - with a cell the option is to run a hybrid diesel/petrol and cell install or a 100% setup. In the hybrid setup some put the hho supply before the buttryfly, some connect directly to the intake manifold, the latter meaning that fuel savings / efficiency relies upon less opening of the butterfly, there are also complications with vacumm on a cell....and so on. What I found with my first install was no matter what I did, the fuel consumption of the vehicle was tied to the air flow meter, throttle position sensor, oxy sensor temp sensors and the map of the ecu and engine spark timing.
I found obd1 vehicles are just tough to play with the ecu unless the tools to modify are available, particularly so as auto gearboxes have their ecu linked to the main ecu......
so thats why im thinking the injector is the way to head to as the injector timing would already be there to be used from the ecu.....