[iwontxlr8]

I was trying to emphasize how adding gas to unburnt gas wont help burn it better and provide better emissions. I concur that it is not injected directly into the exhaust pipe. I should have said it better. I wanted to emphasize the method of opening the injector and allowing it to sit there and puddle could not help in emissions. Doesn't gas burn better if it is atomized better. The finer the mist the better the combustion or is all the fuel injector cleaning a waste of time in gaining more MPG

I am also curious as to dispensing in the intake during the exhaust stroke for the purpose of heating the gas. Won't the dispensed gas be pulled away from the intended cylinder from the vaccuum of adjacent cylinder/s on their intake stroke? If hotter gas makes for better combustion manufactures should heat it up first.

The body styles of the 1990 and 1993 Sunbird 2 door coupe are identical and the tire size also the same, in my case. The only difference between the two cars is the injection and ignition. According to the service parts identification label they both had a F68 final drive ratio 3:45. I made sure this remained the same. I really like the car and wanted to refurbish the 1993 and keep as many parts from the 1990 as possible.

My last tank of gas got 40.9MPG city. As far as hydrogen and snake oil, I am undecided to this point. I do credit the hydrogen generator with my awareness in consumption I was getting 28-30 around town and 33-36 highway before it all started. I employ some of the hypermiling techniques(if no one is behind me) I also disconnected the fuel injector at idle position and disconnected the O2 sensor along with removal of lower valance plastic piece.

I agree the injectors are shut off completely with rapid deceleration of the throttle, I wanted to continue this when I was sitting in traffic or traveling downhill. I have to be saving some gas with this because the engine is misfiring now. This can only be due to fuel starvation.