Hey forum, I just bought my first car the other day, a VS II Calais V6. I changed the head unit in it today and noticed this plug underneath the steering wheel, just above the brake pedal. I am assuming it is for adjusting the car's computer, but I am really curious as to what it is. I also found no mention of it in the car's manual. -Ryan
Thanks I am doing research into installing a hydrogen system into my car, and one of the problems was making the car deliver less petrol to the engine, but some research shows I can use one of these devices EFIE Air Fuel Ratio adjustments, EFIE and sensor tuning (Scroll to very bottom) to alter the oxygen readings and such and deliver less petrol to the engine and then supplement that with hydrogen. This device plugs into that very OBD-II plug
FYI, VS is not OBD2 compliant, so most things you buy that plug into an OBD2 plug won't talk to the car. Shouldn't matter anyway, if you add more combustible fuel to the mix, the oxygen sensors will scale back the amount of fuel going into the engine anyway.
Its obd1.5 essentially. Basically it is an obd2 plug and it uses a unique pin out to any other make or model. It runs the 8192 Baud as opposed to the earlier cars that ran 190 baud from memory. Its a faster data stream
