I see alot of people asking questions that aren't getting answered. I am in the auto repair business and everyone in my field doesn't believe hho works at all. I'm still at a stand still with my kit due to insufficient funds so I can't say i've witnessed it working but I still think it can work. I have access to OEM information on nearly every Make Year and Model of car and I am willing to give this information to anyone that asks. Every car manufacturer uses a different method to get their car to meet emissions. And if you are going to trick the cars computer you need to know what the computer is looking for. Just send me year make and model engine size and sub-model (EX,LX,GT or whatever) and I can give you the strategy that the computer uses to pass emissions. and that should give you the edge to make hho work to its fullest.