About
Chiptuning
Introduction
The operation of the car
engine is controlled by a computer (ECU) upon the information supplied
by indicators in the engine compartment. All the information from the
indicators reach the ECU and while setting a Chiptuning the commanding chip of the car
computer is reprogrammed to achieve upgraded efficiency and optimal
operation.
Parameters
In the case of
petrol fuelled (suction) engines without charger a 10-12% increase of
output can be reached.
The increase of the torque in these
cases is between 10-15%. In case of charged (turbo or compressor)
engines the increase of output can be between 20-30%, in the case of
certain models it can be even 40%. The increase of torque is between
20-40%. It is remarkable that a higher torque is available at low
engine revolution (rpm), allowing our car to accelerate more
dynamically in the whole rpm range after the motor optimization. We can
redifine the pleasure of driving in our own car without any mechanical
transformation. If in the future eg. in case the car is sold and the
new owner will prefere the factory settings, the original characteristics will be reset free of
charge in all cases.
Differences
Modern time cars are mass
produced, the component parts of the engines are manufactured with
certain margin which result in differences between the engines assemled
by these parts, there are no two identical ones among them. From
performance point of view the difference between two engines of the
same model can reach up to 5-10%. The manufaturers however always take
the more economical solution and for this reason the result is that
different engines of the same type get the same commanding program
fitted. Deriving from many manufacturing margins each car has reserves disponible which we can use
by the optimization of the
motor.
Functioning
The
command program is situated in the computer of the car (ECU:
abbreviation of Electronic Control Unit) in a data storage unit. The
chiptuning allows individual settings for each car, this way we can
optimize the engine operation, which results in better efficiency more
economical operation and in normal operational conditions a decrease of
consumption. All the data of the senzors, detectors of the motor
compartment reach the ECU upon which the evaluation and command is
done, for e.g. how much fuel, pre-ignition, turbo chargeing, etc. is
needed in a certain moment. The setting of these parameters of the
engine is modified during chiptuning in harmony with each other,
according of the type of the
car and within the limits determined by the manufacturer.
The setting of the different parameters is done depending from the RPM
and the load.
The process of
Chiptuning
The manufacturer s software is read,
saved, than follows the setting of the parameters. In each case the
very software of the manufacturer of the car is modified, no program of
any similar but differently equipped car type is applied. During an
individual application only parameters of the engine functioning are
modified, all the further settings remain intact. The actual condition of the engine,
kms done, driving style of our client, his/her requests are taken into
consideration, for e.g. the upper limit of revolution is
set as requested, the reaction of the accelerator pedal is adjusted to
the foot, etc. A perfect setting requires the harmonious modification
of all parameters belonging to the engine operation which allows an
experienced expert to adjust the driving properties of the vehicle
according to the requirements of the
driver.
Results
The Chiptuning will
not alter the operation of the functioning of the diagnostic
instruments so those will communicate with the computer of our
car the same way after optimization as well. No change of
idle, no control laps lid and reading of error messages can be done
without problem. Summing up, our car will be perfectly operational
after optimization, the motor will be more elastic in functioning, it
will accelerate better even in the lower revolution range, shifting can
be made earlier so that no extra high revolution will be needed to gain
the desired acceleration. No
shiftback need in overtaking, or on rises, accelerator pedal reaction
and performance/weight ratio of the car are improved and this way the
consumption will be 5-15% less in normal operational
conditions. Output will be more evenly distributed in all
revolution ranges, the turbo-hole effect will be eliminated, or
decreased (depending on models), the reserves of power of the engine
will be utilised more efficiently. This is to result in more dynamic
driving experience, which is also felt in case of smaller ccm cars,
even with climatization turned on.
Safety
In case of automatic gearbox cars
(e.g. the BMW X5 3.0D), it can be felt that while accelerating the
engine only reacts with several tenths of seconds delay, which
(converted into the distance made) will mean 2 meters per tenth of
second at a speed of 72 kms/hour. In everyday transit there are
situations when steering and fast accelerating offer the solution
rather than braking. With Chiptuning this delay can be elaminated, the
engine reacts instantly for the pedal and we can evade an accident
(even a frontal collision) at a certain situation. Upon optimization our car disposes of
greater reserve of output capacity wich gives us convenient feeling of
safety in cases of overtaking or in critical
situations.
