Cooter... never said or implied it was a"magic fix for everyone", I refered to it as a possible solution worth considering. Obviously if the engine has a significant mechanical condition .... including an intake leak such as mine did, it would have to be corrected. There are two experienced people in this thread that have had success in dealing with less than optimum running due to what I think is EPA induced lean mixture programming. Both used the AF-Xied.
There is plenty of info out there for anybody that cares to look to determine if it would be something they want to persue.