The electronic settings included in VW vehicles can be altered to improve the performance of their engines. The methods used by our technicians - chip tuning and ECU remapping - alter the factory-programmed data stored on a computer chip located in the Engine Control Unit, or ECU. These modifications enhance performance; provide better MPG, and a smoother, more powerful ride.
Remapping is a process that reads the information stored on the ECU chip and changes it so it will better reflect the VW's actual driving environment. The data is accessed via VW on-board diagnostics at the OBD/OBDII port. Remapping can be done on VWs dating from 2000, while chip tuning is a similar performance-enhancing process designed to improve pre-2000 models.
The ECU must be removed from your VW during the chip tuning process. Then the data on the ECU's chip is revised to improve the vehicle's efficiency. Depending on the type of engine you have in your VW, performance gains of 15 percent to 30 percent over the initial performance figures can be experienced. Chip tuning and remapping offer the same range of performance gains, despite the different ways the performance data on the chip is accessed.