Does an engine tuner (chip) reduce fuel consumption?
Most engine tuners focus on increasing horsepower. Tuner manufacturers are hesitant to promise reduced fuel consumption (increased mpg), and some even disclaim this in their ads, but many users report a gain of 2-3 mpg. Reduced fuel consumption is realized by those who continue to operate their vehicles in a similar manner as before the tuner. Those who take advantage of the additional horsepower by accelerating aggressively or racing up steep hills, will almost certainly see no reduction in fuel consumption. Our Ford F-550 truck came with the Superchips tuner. With the tuner installed, we gain 3 miles per gallon while not towing, and 2-3 while towing on flat highways. Why is it called a chip? Today, most engine tuners are installed as software through the engine diagnostic port. Years ago, tuners were only available as micro chips, which had to be physically installed into the engine control circuitry. For this reason, engine tuners are still referred to as chips, and vehicles modifie
