Fuel Savings of 10 percent or more
ECO Systems Fuel Enhancer saves fuel, and improve performance. If you've reached this page from a search, the testimonials from a wide installed base of happy customers is a good start. You can get a good quick idea of the potential using our calculator.

Ten Percent or More
We won't tell you the upper end of our customer's gas savings, since it establishes unrealistic expectations. At 10% savings, if your engine consumes lots of fuel, the ECO-2, ECO-4, or ECO-5 will pay for itself in a hurry.

Tests Cancelled
Yes. Some tests are cancelled. Our customer cannot justify wasting any more money on fuel, and purchase as many units as the budget cycle allows.

Units Returned
Yes. Some units have been returned under our 90 Day Money Back Guarantee. The reason? False expectations. If your vehicle sips fuel, and you want a 30% improvement, well, good luck. Some of our customers have seen it, but it's rare, and we don't sell it that way. We sell it as improving gas mileage for gas, diesel, bio-fuel, propane, LNG, and other fuels, and we guarantee 10 percent or more. If your results are not up to your expectations, return it to us within 90 days for a refund on the purchase price.

Performance
When we sell to police and ambulance mechanics, they are usually very critical at the beginning. At the beginning. After they have done some testing; punched the gas and felt an elephant start to feel more like a big cat; they start looking at their budget cycles.

Cost Savings
If you have not seen the specific examples and testimonials, it's the best place to get started. Some customers save thousands of dollars per month.

Review the Test Results page for the scientific details.