JHolland wrote:You need to measure the injector voltage and current. The DC-DC converter stage can be tricky if you have high current because you can get voltage sag with the turn-on transient, big caps help but can affect the stability. You may also find that you only need high voltage for the peak and then battery voltage for the hold stage.
This is where I'm a bit stuck because my car is not starting so I can't just hook up a scope to see what it's like. I'm gonna have to do some bench testing unless I find some info. I found some 'scope traces for similar injectors, it's an interesting form, with a pre-charge, massive spike, high hold, low hold and then off. The stock ecu and spares are all dead - hence the predicament.
I'm thinking, put a spare injector in a jar of acetone and try out a few voltages with some well-insulated wires outside with a bucket of water for safety. If I have to resort to this. Bosch part number 46805546 or 0261 500 013.
I found a motherload of oscilloscope traces here: https://www.forum.alfaholicy.org/156/61 ... anguage=en
which I need to read through.