Engine computer is probably the most important part of your vehicle, because it can do a lot of things. It is, in fact, considered as the greatest improvement that was made for our vehicles, since it was introduced in the early 1900′s.
An ECM or Engine Computer Module is the one responsible for the improved gas mileage of your vehicle. The reason why you are not spending too much for your gas is because you have an engine computer installed inside your engine.
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