CorollaMaster -
I have read discussions on this gizmo before. The consensus was that it was bogus for MPG (it promised too much).
It definitely looks nice and blingy. From an emissions POV, it seems to do *something* :
http://www.bladeyourride.com/whatitdoes.html
Question: In the above it shows a picture of "28.7 grams of captured PM (Particulate Matter) after 8,500 miles". 28.7 grams doesn't sound much to me. What do you think? How much PM comes out of a normal car over X miles?
CarloSW2