Advantages and disadvantages of advice reprogramming ECUs

Analyze what are the advantages and disadvantages of reprogram your car to the engine power increase will affect fuel consumption and reliability ?. We tell you what problems you may have to reprogram the PBX are and what you should consider the face of ITV and insurance Is it worth it ?.

The reprogramming of the PBX It is common for a dose of extra power of our car solution. In the first part of this article we tell you what it is and then try to resolve doubts that may arise before making this modification.

We started with a question difficult to answer What through reprogramming can lower fuel consumption? Yes and no. We are aware that if we have more power we will have higher fuel spending because somewhere has to leave. But after reprogramming a higher torque is achieved at low revs so it can circulate in long marches longer, something that benefits the consumer.

So yes, consumption may go down, but not because the engine spend less per se but because It allows us to make more efficient driving because they need to rely less on the lower gears. In any case do not expect big differences even more noticeable turbodiesel cars, which already have a large low at around par.

Of course, have an extra dose of power under the right pedal may encourage some drivers to go faster, which will result in higher consumption. The conclusion is the same as before, it depends on your driving style. If we make a line more cheerful, consumption will be higher with reprogramming without it.

Another common question Do a reprogramming harms engine life? This depends on how aggressive the reprogramming. Logically an amendment to increase the original power 50% will be more harmful than the increase by 10% because we are demanding more mechanics.

Standard reschedulings usually soft Y play with margins factory It offered by the manufacturer so you do not have to materially affect reliability. As we mentioned when speaking of consumption, much of the outcome depends on the driver himself: aggressive driving subjected to greater stress to mechanical (with or without reprogramming) and shorten the life. Moraleja, do the Kaffir and the car will last longer.

By reprogramming Does the official car factory warranty is lost or have problems with ITV or insurance? The theory is yes. Increased power is a major reform so it is a modification that must approve and include in the data sheet (ie, paperwork and extra costs). You also have to inform the insurance and, of course, means the loss of guarantee by the vehicle manufacturer (unless the change is made in an official workshop).

In practice it is very difficult to have any problems in this regard because it is virtually undetectable: no physical modifications only at the software level. In any case, remember that rescheduling is reversible and you can always return to the original settings if necessary.

Reprogramming ECUs: the whole truth

Personal experience

Some years ago I went to a renowned specialist to perform reprogramming my car. Since then I have been many who have asked me about my experience and expressed doubts before taking the plunge to do with your car. With these lines I hope to clear uncertainties.

The car in question is a Seat Leon second generation. bears 2.0 TDI engine with 140 hp before restyling, it ie not carrying common rail injector pump but, and is linked to a manual change.

It is a common engine, mounted not only in multiple models of Seat but also other brands of VAG group so the workshop had previously received visits from several dozen models with the same engine. By the experience I opted hoarded by a standard reprogramming, they already had more than proven. Before and after reprogramming, which It was made by OBD, he got into the bank to compare results.

I have colored graphics to make it more understandable. The dashed blue line is the power series and red power after reprogramming, their values ​​are reflected on the left axis represented in kW. The dashed line is the pair yellow green original and engine torque after reprogramming, with the values ​​reflected right into Nm. The bottom axis are revolutions per minute of the engine.

Seat homologaba 140 hp and 320 Nm of torque for this model. In my unit, first launched in the bank offered 115 kW (156 hp) and 356 Nm respectively. After reprogramming the ECU reached 131 kW (178 hp) of power and 399 Nm of torque.

The 2.0 TDI is known to deliver the power abruptly around 2,000 rpm (the famous kick feature), but under that regime there is little strength and should gear down. After reprogramming, the difference was remarkable. The engine livelier and more powerful noticeable, but it is also somewhat softer and usable in town. The kick It has softened, making delivery and more progressive power from below. At about 1,800 rpm already beginning to feel the thrust.

With the new electronic management spending less fuel because I can go on long marches No problem. It is now possible to make more efficient driving can not be sure if doing the same type of driving before consumption would be the same or less, but I'm sure it would not be more.

About reliability, more than 100,000 kilometers have traveled since then and suffice to say that the number of incidents to date has been exactly zero. It's been several official reviews since and have never been detected strange signs of wear or defects of any kind.

Another question often is whether the car me check more black smoke than usual, something that does not happen under normal conditions but Yes stepping on the accelerator. In any case, I've never had problems on ITV in opacity test that measures the level of smoke coming from the exhaust.

So I have gained in performance, smoothness and also enjoy a wider range of useful revolutions. I can not be more pleased with reprogramming and certainly in future cars may have repeat. Of course, my recommendation is always go to professionals renowned specialists offering collateral.