It may sound silly, but they actually work. Yes, you can install a device into your vehicle to save money. Effuel seems to function like other performance chips, tracking driving habits and saving you money in gas. Most performance chips target the power of your engine, changing the way your engine uses power.

Does the fuel saver device really work?

It is claimed to increase vehicle fuel economy by up to 25% through "power conditioning of the vehicle's electrical systems", but Consumer Reports detected no difference in economy or power in tests on ten separate vehicles, finding that the device did nothing but light up.

Can performance chips ruin your engine?

No. A performance chip does not cause damage to your engine or transmission as it increases the horsepower and torque output. This power is generated mainly by harmlessly adjusting your air/fuel ratio and ignition timing to optimal settings. In fact, a performance chip can even protect your engine from damage.