What is Tuning
"Tuning" as improvement of vehicle overall
performance in response to user needs. When tuning, some users may have some
incorrect thought which may lead to them fitting the wrong parts for their
needs. For this reason it is important for the user to know "what their
target/goal" is and "what parts are needed" to achieve this goal.
Here we will explain engine tuning, from light to hard, as simply as possible.
The First Step Tuning is Understand How Engines Work
Cars will not become fast by simply throwing parts at it. It
is important to understand your own requirements and then tune to suit. This
can also be applied to increasing engine power also. There are many routes to
obtaining more power but depending on whether you want big peak power or want
low engine speed torque for comfortable street driving, the choice of parts
will change along with the order in which each process must be completed. In
order to efficiently know what course to follow, it is important to understand
how an engine and its components work.
The 5 Main Elements Of Engine Tuning
-Intake Parts
-Exhaust Parts
-Forced Induction
-Fuel Managements
-Ignition
-Intake Parts-
when people use strength or exercize,they breathe heavily
and breathe with lot of air.
A car also produce more strength by breathing in more
air.The best and most efficient way to increase the intake air volume is to
change the air cleaner system.
In order to increase intake efficiency, the most important
thing is to remove anything that could become a restriction and guide air
smoothly into the engine. However, the stock air cleaner is designed to reduce
intake noise and to prevent the filter from being blocked over a long period of
use under a variety of conditions. This makes the stock air intake system very
inefficient from a performance point of view. It is like someone running a
marathon wearing a gas mask!
-Exhaust Parts-
In the intake system we discusses how it is important engine
to breathe in but as with the human body,
it is just important to breathe out.The first step in
breathe out tuning is muffler replacement.
The basics of exhaust tuning are in the increase of exhaust
efficiency but it is not right to assume that the least resistance leads to the
highest efficiency. By removing the muffler, exhaust resistance is radically
reduced but engine torque is also reduces, adversely affecting launch and
vehicle acceleration so it is necessary to have just the right amount of
exhaust back pressure (resistance). Exhaust manifolds are a good example of
this where it is possible to change the characteristics of the engine with the
shape, joins and lengths of the manifold. The exhaust system plays a vital role
in the exhaust emissions and sound levels of the car. Stock mufflers tend to
have tight bends and crushed areas in order to reduce production cost and
layout reasons. The emphasis on the design is to reduce sound levels and gain torque
at the lowest engine speeds. Sports mufflers have smoother bends to increase
the efficiency of the exhaust system and each system is tuned to the specific
car so that sports cars can have efficient power all through the rev range,
whilst sedan and wagon cars will have more emphasis on producing torque. Sound
is also tuned to suit the application whilst giving enough to state its
presence. Turbos (more details later) use exhaust energy to produce power and
so become a resistance in the exhaust system and so mufflers for turbo power
cars are designed with less resistance compared to NA vehicles. Dependant on
the vehicle type and muffler, it is possible to raise boost levels and gain big
power increases.
Stock mufflers prioritise low cost, low sound levels and low
engine speed torque and the silencer has many sections disrupting the flow of
exhaust gas.Sports mufflers which have prioritised exhaust gas flow have gentle
pipe bends and the silencer has a straight pipe design which aids exhaust gas
flow. Sounds levels have a tendency to increase, but some modern sports
mufflers are able to provide efficient flow whilst keep noise levels low.
Metal Catalyzer improved both exhaust efficiency and
Cleansing Properties
The catalyzer cleans the exhaust gasses so that they are
less harmful to the environment. A catalyzer has a fine mesh structure with
many tiny holes causing a resistance to exhaust gas flow. When considering only
exhaust efficiency, best results would be achieved by the removal of the
catalyzer but this would release many harmful gasses into the atmosphere and
make the exhaust sound very loud. For these reasons the removal of a catalyzer
from a vehicle is prohibited by law in many countries. In order to overcome
this issue, the HKS 150 cell metal catalyzer was developed which has a much
coarser mesh (cell) design allowing more efficient exhaust gas flow whilst
maintaining cleansing properties through innovative design combining
performance with social responsibilities.
to be continue at part 2
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