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Originally Posted by Klaus
I've never seen a nationally recognized testing lab post positive results from any of these devices. I haven't seen these, but I suspect they only lighten your wallet.
Consumer Reports did some testing on the usual suspects in June:
http://www.consumerreports.org/cro/c...view/index.htm |
Less weight = more MPG. That is how it works, then!
Seriously though, I wouldn't mind trying one. Mythbusters did a show on things to increase fuel economy, but unfortunately, these types of devices were not tested.
I wouldn't mind trying them with the money-back guarantee, though if they twiddle their thumbs and take their time getting the money back to the purchaser, that sucks.
I've heard a lot of negative things about similar products in the past, but I'd like to see for myself.