I found this item on Ebay that advertises an increase in fuel efficiency of up to 30%. I'm not a mechanic, but figure if it sounds to good to be true it usually is. Does anyone have any experience these things, or info if what they say is true? Any info would be appreciated.
Thanks!
John
This Product design has proven to give your car up to 15% more horsepower at certain RPM points, as well as increase fuel effeciency by up to 30%. Personally when i installed one on my vehicle, I felt a noticeable increase in low end power and I saw a 25% increase in gas mileage (20mpg up to 25mpg). With Gas being so expensive, this could pay for itself in no time with gas savings alone."