PCM Reprogramming: Understand How It Works

Let’s look at what PCM Rescheduling is, how it is performed, its key benefits and the major risks we should be concerned about. The goal is to try to help those who are looking for an effective solution to increase torque and power, clarifying the main doubts on this subject.

Mercedes PCM maintenance and reprogramming has now become a much-needed service to increase vehicle performance for a number of reasons: Its execution is relatively quick, it offers low risk of engine breakdown, many companies offer the service with adequate support and have an excellent cost x benefit, since it usually delivers the promised power gain.

To understand exactly what PCM reprogramming is, let’s start from the beginning: In the old days when the vehicles were more mechanical and did not have so many electronic components, the carburetor was responsible for powering the air and fuel engine and the distributor was responsible to set the correct ignition timing on each cylinder.

Any modification to increase engine power should be accompanied by an adjustment to the carburetor and distributor to match the fuel supply and ignition curve to the new engine operating conditions.

Currently all vehicles are equipped with electronic fuel injection and have a central computer that controls the entire operation of the engine. This computer is popularly known as power-train control module (PCM).

It is programmed to receive the signals read by the engine sensors, analyze this information and decide which operating parameters are most appropriate for that particular situation to which the vehicle is being subjected.

The end result of PCM maintenance and reprogramming is a much faster vehicle in any situation, with more torque and power available throughout its range of use. Even with the remarkable performance gain, at low revs the car’s behavior remains docile as the original, which makes the consumption in this situation be close to the original.