You would think that improving the car's performance would take miles of a car's life, but in fact, your engine's life expectancy is not affected by chip tuning. What's more, you'll use less fuel. Because? The tune up can be done much more accurately because all necessary power fields in the EEEPROM (short for electrically erasable programmable read-only memory. A special type of PROM that can be erased by exposing it to an electrical charge) are adapted, at all numbers of revs and/or accelerations. (This is very important for automatic cars). Last, and probably least, unlike that chrome air scoop your uncle put in last week, chip tuning is invisible from the outside.