Porsche 911 GT3 RS User Handbook Manual page 83

Exhaust emission control.
The 911 GT3 and the new
911 GT3 RS comply with stringent
emissions standards, including LEV
II in the USA and Euro 5 in Europe.
Porsche vehicles demonstrate
that even high-performance sports
cars can achieve moderate emis-
sion values in their respective
category. The 911 GT3 models
are not only among the most
powerful sports cars, but they
are also among the cleanest.
This is achieved using two catalytic
converters and an oxygen-sensor
control system. The two banks
of cylinders are monitored sepa-
rately. Two corresponding oxygen
sensors control the exhaust gas
composition individually for each
exhaust section. In addition to this,
another sensor for each bank of
cylinders monitors the conversion
of pollutants in each catalytic
converter.
Fuel.
Today's Porsche sports cars are
already designed to run on 10 %
ethanol. Ethanol has a positive
impact on the CO balance since
2
the plants grown for the produc-
tion of this biofuel also absorb
CO from the atmosphere.
2
Fuel system.
In the fuel system of the 911 GT3
models, the emission of hydro-
carbons has been minimized. This
is achieved through a large active
carbon filter and a special coating
on the fuel tank. All pipes that
carry fuel are made from alu-
minum, while vapor-carrying
lines are made from multi-layered
plastic.
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The new 911 GT3 RS and the 911 GT3 |
Noise.
The 911 GT3 models comply with
all valid noise requirements in
the countries where they are sold.
Noises are eliminated at source.
It sounds paradoxical, but without
any noise there is only one pure
sound.
Servicing.
Long service intervals offer
clear advantages. For you: lower
costs and saved time. For the
environment: the use of fewer
consumables and replacement
parts. For details of the service
intervals for the 911 GT3 models,
please consult your local autho-
rized Porsche Dealer.
Environment