[07DCwhiteSR5]

we know its all BS. like posted before, if it was to work then the manuf would have doneit to begin with given all the stress on MPGs. anyone who puts something on their truck to improve MPG will drive differently, not even on purpose, so it comes down to the same old same old- the true way to improve economy is to improve driving style and habits. no little bolt on gizmo works w/o changing something else for the worse. and why did this old thread get revived just to repeat the same stuff?