By James Rodham
Subaru is known for their technology oriented performance vehicles. One of the early technological features in Subaru motor vehicles was the Engine Control Unit (ECU) also known as Electronic Engine Control Module. Some vehicle manufactures even know it by the name Power-train Control Module (PCM).
An Engine Control Unit (ECU) is nothing but an integrated computer chip or a set of chips that work to control certain features of the vehicle's engine electronically. The main functions of the ECU are to determine the amount of fuel for ignition, ignition timing, spark plug and valve control among other essential functions that help an internal combustion engine to function smoothly with maximum efficiency. In short, ECU is a mini-computer looking after the performance and efficiency of your car. A properly functioning Control Unit will keep the engine of your vehicle in peak performance mode while increasing its efficiency and power, whereas a faulty ECU can give you quite a few headaches along the way by decreasing the output of your engine and ultimately causing serious damage to it.
As mentioned, an ECU is a chipset of micro-processors that control the engine electronically. In the long run, prolonged ECU problems can lead to permanent engine damage and it is imperative that you service the ECU of your vehicle on time or under extreme circumstances, replace it. The ECU technology in Subaru vehicles is of the highest standard but still there might arise a need when your vehicle needs its ECU to be replaced. Brand new Subaru parts don't come cheap and the ECU is no exception to this. Now if you care to make a logical decision, you know which way to go in case your Subaru needs a replacement Engine Control Unit.
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