I own a gas direct injection suv. How will the D.I. effect the performance of a HHO Supplemental generator?

Answer 1

Best Answer - Chosen by Voters

The intake system and your fuel management computer on your engine has no way to detect that you are adding extra fuel to the incoming air and will continue to operate and add fuel at the same rate it always has. Your fuel mileage will not change by so much as one drop of fuel with this system added to your car.

You just wasted your money. You would have saved more fuel by properly maintaining your tire pressures and changing your air filter.