The Engine Control Unit (ECU) is the computer that controls how an engine works. An ECU remap can boost and enhance the fuel ecomomy and power of your car within an hour.
By default the settings or maps are not the best they could be. This is down to manufactures having to consider laws, rules and regulations of all the countries they sell the vehicle in.
Performance can also be limited by car makers so they can release an upgraded and more expensive version at a later date while only changing a few settings in the ECU.
ECO – Software developed to concentrate on fuel economy
Stage 1 – Software Only
Stage 2 – Software with the addition of exhaust system and/or intercooler
Stage 3 – Software along with more extensive hardware upgrades such as hybrid turbo etc
DSG / Gearbox remapping – Optimised gearbox software improving torque capabilities, shift speeds, launch control and rev limiters