This is all governed by one major chip, which contains just what is referred to as an engine 'map'. This map 'reviews' all the inputs from sensors and is configured to offer the optimum settings under a variety of circumstances. However, perfection is impossible to attain generally, as a number of concessions need to be made. Mostly this is due to economic climates of scale. Manufacturers have to create vehicles for a vast array of markets where issues such as gas quality could have an impact. As numerous motor vehicles used in Europe will be driven right into neighbouring countries with poorer fuels offered, or will be utilized in harsh settings where dust and also extreme heights prevail, the engine management map is a 'broad brush' approach to take all this right into factor to consider.
In other words, there is no longer any kind of need to take into consideration engine remapping with a view to either boosting performance at the expenditure of fuel usage, or the other way around. There are a variety of specialist remapping companies who will supply you the possibility to have your cake and also have it!