The Engine Control Unit (ECU) is the brains of the engine. It decides how much fuel is burnt, how fast it's burnt, ignition timing, throttle response - basically it manages your engine. A programmable ECU allows you to manually adjust the parameters to suit your driving style. There are aftermarket options that swaps old ECU's with newer pre-programmed units that feature Plug & Play engine management control units that raises horsepower, timing, fuel injection, electronic throttle control and valve timing for better vehicle performance.

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