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Fuel Saving Devices Do They Really Work

These days we are all keen to conserve fuel since it saves us considerable money. For this reason a fuel saving device can appear like a savvy investment. Now there are hundreds floating around on the Internet, all boasting grand claims of increased efficiency and power with scientific evidence to boot. It can be quite hard to tell whether they are the real deal or simply snake oil salesmen. Carefully examined below are the three most common fuel economy boosting devices currently available on the web.

Fuel Line Magnets

There are numerous incarnations of the fuel-line magnets out there. By clipping these magnets onto your fuel line they promise increased fuel efficiency, lower emissions and even increased power! That’s a big promise from these humble magnets.

The Claims: The sellers explain the magnets will induce magnetic fields that split apart groups of fuel molecules passing down the fuel line. Thus the fuel can now burn with higher efficiency.

In Reality: Fuel molecules are not even magnetic. Also, since the fuel lines are made from steel any magnetic flux will not get a chance to pass through the fuel. When tested in real-life application they failed to provide any noticeable increase in either power or economy.

Vortex Air-Intakes

Again these devices come in various forms, but all operate using the same principles. Once mounted within the engine’s air-intake system, the device uses static or spinning blades to whirl the air entering the engine.

The Claims: According to the manufacturers’ theories the resultant “mini-tornado” is more effective at mixing of air and fuel, thus a cleaner combustion is created within the engine.

In Reality: After passing through the device the air will then hit the engine airflow chamber already designed to promote clean airflow. The addition of this device only causes additional turbulence and restriction. Less airflow results in increased efficiency.  Not surprising tests revealed the device reduced power by 10% and fuel economy by 20%.

Electronic Ionisers

This supposed fuel saving device consists of a series of interconnected wires with rubber capacitor blocks. The blocks are fitted to each spark plug lead above the plug, linking all the plugs together electronically.

The Claims: They claim the device transports the charge from the firing spark plug to all the others. The transported charge causes big hydrocarbon molecules to break apart in the other cylinders. When it’s time for the other chambers to fire it will produce a cleaner combustion.

In Reality: For a start we are actually trying to prevent cross coupling of the spark plugs since it causes undesirable cross firing. Low and behold, when put to the test the device reduced power output by 15 BHP. Worse yet, it can become a big safety hazard as the cheap components easily melt under engine operation. A real recipe for engine fire and disaster!

The Take Away

These cheap, quick fix devices do not work at all. The manufacturers have already devoted extensive research and development to maximise their fuel efficiency. It’s not possible to easily increase this without significant engine re-designs. Sadly there are no short-cuts, you must rely on the well known conventional methods or buy a new car!


published: 28/07/2015 09:27:28

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