[Hot Item] Diesel Engine Electronic Control Unit ECU Ecm 3408501 for Cummins Qsm11 M11

Remapping an ECU, or Electronic Control Unit, is the process of changing the settings of a car's ECU to improve its performance. This is also known as ECU tuning or chip tuning. Here's some more information about remapping an ECU: Why remap an ECU? The ECU is a mini computer that controls a car's engine. From the factory, the ECU is programmed to limit the engine's performance to improve reliability, emissions, and fuel consumption. Remapping removes some of these restrictions to unlock more pow