The theme of chip-tuning is not new. Many publications in the press, the discussion in online conferences show an increased interest in this type of refinement motor of vehicle. But, unfortunately, many vital questions remain behind the scenes, appearing again and again. In this article we try to answer the main questions about chip-tuning.

Chip-tuning gives an increase of horsepower and torque. The magnitude of this increment depends on the type and design of the engine, its mode of operation. After the tuning the power usually increases by 5-25% with an increase in torque by 10-50%. Usually they say about an increased capacity, although subjectively it feels much less than increase of torque.

Due to what extra power and torque appear?

First, a bit of theory. Capacity – is the work that the engine can perform per unit time. This value is typically straight and almost linearly dependent on speed. The more we drive the engine, the more power we get. But the possibilities of the engine is not unlimited, especially because on its maximum speed the purging and filling the cylinder with air-fuel mixture become much worse, and the wear of all moving parts sharply increases. Therefore, manufacturers are imposing restrictions (the so-called cut-off) to limit engine speed. This cutoff is set in the program of control unit and chip-tuning may be shifted toward higher speed, or removed altogether. The shift is determined, above all, by the ability of the engine to “turn” faster (of course, up to certain limits).

In any case, the rate of power will grow. Only those who are willing, not sparing the engine, untwist it to the limit will be able to feel such an increase. In everyday use the torque is much more important factor. It enables the machine with the simplest diesel engine to start no worse, and sometimes even better than similar vehicles with gasoline engines in the 1.5 – 2 times more power. Motor with high torque much is “stretcher” that allows transferring switch less; to drive this car is much more pleasant. In naturally aspirated engine the torque is increased due to more precise control of ignition and fuel injection. Take into account two parameters – the rate of combustion of fuel and speed. Objective – is to provide maximum ignition later with the complete combustion of fuel in the cylinder. In turbocharged engines it is still possible to control boost pressure that gives tangible addition efficiency.

How much time will fuel consumption after chip-tuning increase?

Consumption usually increases immediately after tuning and remains in such position about a week. Then it falls to the former, but in most cases to the lower level. This phenomenon is explained simple. Immediately after processing, the owner begins to feel the car, “chasing” it in hard mode. Then, without noticing it, it returns to the usual style of riding. And in this case, consumption is determined by increased efficiency: for the same traffic conditions it lacks a smaller amount of fuel, it is simply easier the engine to “spin”.

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