wide band sensors on current autos

[sonora]

Hello.
We have been testing our fuel additive for effects on combustion efficiency using a scan tool with car on a chassis dyno. It is apparent that when the additive is in the fuel the oxygen sensors and fuel trims eventually respond by adding more fuel (first runs give very good mileage increases and then sensors return to normal).
I would like to test the additive with a make of car that comes stock with sensors that can read a broader range of A/F and therefore perhaps allow our additive to provide the true effects on mpg.
Does anyone have any feedback as to what makes or models of vehicles would provide a better range of improvements in mileage?
Thanks......sonora mike

[mike]

You just need to use an EFIE. Any technology that improves combustion efficiency has the same problem. If your technology will improve combustion by 25% then you'll have 25% more air in the exhaust because the engine will turn 25% more times for the same amount of fuel. This will appear lean to your computer and it will eventually adjust the fuel trims to compensate.

The only known cure is an EFIE.

Wide band o2 sensors don't change the situation. They are more accurate, but they will do the same thing, only faster. They also need an EFIE to compensate for the combustion improvement.

If you check out the link in my signature below, you'll see the documents that cover all of this in more detail.