Car Dignostic Solutions
ECU Remapping
ECU Programming
ECU Tuning
Fault delete
Change key battery
ECU Remapping
Chip tuning changes or modifies an erasable programmable read-only memory chip in a car or other vehicle's electronic control unit (ECU) to achieve superior performance, whether it's more power, cleaner emissions, or better fuel efficiency. Engine manufacturers generally use a conservative electronic control unit map to allow for individual engine variants, as well as infrequent maintenance and poor quality fuel. Vehicles with a redesigned ECU may be more sensitive to fuel quality and service schedules.
ECU Programming
ECU modification does not involve code modification, but data - the "maps" or tables that the ECU code uses to look up how much fuel and timing to apply for a certain amount of airflow. These maps are usually found either through static analysis (looking for data that increments in a certain way) or through debugging (seeing which address the ECU is reading at for a given set of input conditions).
ECU Tuning
The push for better fuel efficiency led to the introduction of engine control units. These early ECUs monitored the amount of oxygen entering and exiting the engine. The signal was then sent to a solenoid valve that controlled how much air and fuel entered the carburetor for the best air-fuel ratio. If you want to tune or change the ratio, you need to reprogram the computer.