Why doesn’t a factory car have the highest performance parameters set?
There are various emission standards in different countries, as well as different
premium levels as determined by engine power, and different fuel quality, tax rules or
longer service intervals. Passenger cars and lorries, as well as agricultural
machinery, are manufactured in series of several thousands to minimize costs, so the
engine is optimally ready for a normal ride. In terms of performance, however, this
optimal setting has considerable reserves, and the optimization of a control unit is a
modification that makes use of these reserves to rapidly increase the engine
performance and torque.
Will the engine last? How will its life and consumption change?
The engine is composed of a number of components that perform a circular or linear
movement that determines the life of the engine. Bearings and piston rings are
dimensioned for a certain number of cycles/revolutions. Under the same operating
conditions, it applies to each engine that the more cycles/revolutions it makes, the
more it is worn out. If we want the engine to last for as long as possible, it should do
as few cycles as possible.
To get a clear idea, here is an example:
Imagine two identical cars driving on the same road. Vehicle A has a performance
optimization and, therefore, a more powerful engine, vehicle B has a serial engine.
Both vehicles drive at a speed of 100 km/h, and have an identical speed of 3,000 rpm
at gear 4, that is, 180,000 rph.
When the road starts to climb, the road resistance will also increase. Vehicle B with
an unmodified engine must shift to a lower gear (should it maintain the same speed).
Vehicle B changed down to gear 3, thus increasing engine speed to 4,000 rpm. Its
engine will do 240,000 rpm instead of 180,000 rpm on a 100 km long track. Lower
number of cycles/revolutions extends the engine life!
There is a difference in fuel consumption as well. It is directly proportional to multiple
intake cycles with higher revolutions. Higher performance naturally equals more fuel
in driving mode, when you use increased engine power and enjoy dynamic driving.