I'd laugh my *** off if people were using those "gas saving" devices on their Hummers and Excursions. It probably isn't too likely, but it would be pretty ironic.

I hope they reair the segmenat. There was a lot of useful info as far as to how bad these devices actually are. The pill was only about 20% of the itenms covered.

I like the fact that some of them not only had no gains, but actually made it worse. My daily driver is a 6.0L sligthly modified engine that I stomp on, even with these gas prices. I only live 9 minutes from work, so I really don't care too much. I have gotton 16mpg towing a Bonneville on a flat bed before, and average about 12.5 mpg inthe city florring it from light to light. Just the price I pay to have fun.

hmmm i would think that if these products actually worked they would come pre-installed in newer cars for better gas mileage

thats why i dont use them....

just my opinion

far as im concerned best way to save gas is have good properly inflated tires, a well maintained engine, and a highflowing intake and exhaust to improve efficiency, oh and cruise contorl on the highway keeping under 70

probably has to do with the 2.84 gear ratio in the last car it would get 30mpg at 75mph, and 28mpg at 65. However the ssei averages about 27/28 at that speed and highest I have seen was about 29mpg doing 65-70

which gear ratio gets the best mpg? caus ein my ssei i get about 35mpg at 67mph

About what I had seen in my SSEi. Best MPG I ever got was while following my friend who was pulling a 20x8 trailer with his Exploder. We were on county highways at about 60-65 mph and I was just shy of 31 MPG. I attributed it to the lack of passing other cars.