Review on Advanced Performance Chip/Power Programmer for Land Rover Discovery & Discovery Sport 2.0L, 3.0L, 3.9L, 4.0L, and 4.6L - Enhance Fuel Efficiency, Save Gasoline & Boost MPG, Elevate Horsepower & Torque! by Frank Rivera

The marketing behind this product is VERY misleading. If you have come to this point to improve fuel economy or increase the performance of your diesel ATV, there is no way to fit this product into your vehicle. If you have a petrol engine this product works by tricking the engine computer into believing the air is much colder than it actually is so the computer will add more fuel (colder air is denser so the engine needs more fuel to run at lower temperatures). ). If they work at all, then this rich driving situation created by this "chip" is unlikely to increase performance, and certainly not increase fuel consumption. I actually installed one of these in another car and the only noticeable difference was the reduced fuel consumption and the slightly greasy exhaust smell. Save your money and learn how you can actually get more power out of your engine because it isn't.