2009 PORSCHE 911 ECO mode

Variable Turbine Geometry
(V TG).
The 911 Turbo and 911 Turbo S
models are straightforward, almost
mat ter-of-fact, when it comes
to handling power. V TG has con -
tributed enormously to this.
The variable turbine geometry of
the t win water-cooled exhaust gas
turbochargers goes a long way
to resolving the conflict of aims of
normal turbochargers. With this
technology, the gas flow from the
engine is channelled onto the
turbines via electronically adjust -
able guide vanes. By changing
the vane angle, the system can
replicate the geometry in all
t ypes of turbo, large or small,
and thus achieve the optimum
gas-flow characteristics. The
guide vanes are controlled by the
engine management system.
The result is a high turbine speed
– and therefore higher boost
pressure – even at low engine
rpm. With more air available, the
combustion is increased, yielding
greater power and torque.
Maximum torque is reached at
lower rpm and is retained across
a wider rev range. Both engine
variants deliver a torque of just
650 Nm from as low as 1,950 rpm.
In the case of the 911 Turbo
models, this torque is available
up to 5,000 rpm. The increased
maximum torque of 700 Nm in
the 911 Turbo S models is avail -
able bet ween 2,100 rpm and
4,250 rpm.
When the boost pressure reaches
its maximum value, the guide
vanes are opened further. By var -
ying the vane angle, it is possible
to achieve the required boost pressure over the entire engine
speed range. As a result, there is
no need for excess-pressure
valves as found on conventional
turbocharged engines.
In the 911 Turbo models, engine
performance can be further
enhanced by selecting the SPORT
but ton on the optional Sport
Chrono Package Turbo. Under

full acceleration, the maximum boost pressure in the lower and
medium speed ranges is tempo
-
rarily increased by approximately
0.2 bar. As a result, engine torque
is temporarily boosted by 50 Nm
to a maximum of 700 Nm. The
911 Turbo S models, by contrast,
are configured to operate with a
higher boost pressure level, which
means that their maximum torque of 700 Nm is available for an
unlimited period.
These values are sure to impress.
Yet, combined with the fuel
economy achieved despite the
high power output, they are
even more impressive. Because
power alone is not enough.
Guide vanes closed
Guide vanes open
Performance | Engine
Variable Turbine Geometry (VTG)
· 36 ·· 37 ·

This double clutch provides
an alternating, non positive
connection bet ween the t wo
half-gear
boxes and the engine
by means of t wo separate
input shafts
(input shaf t 1 is
nested inside the hollowed- out
input shaft 2).
The flow of power from the
engine is only ever transmit ted
through one half-gearbox and
one clutch at a time, while the
next gear is preselected in the
second half-gearbox. During a
gear change, therefore, a conven -
tional shift no longer takes place.
Instead, one clutch simply opens
and the other closes at the same
time. Gear changes can therefore
take place within milliseconds.
Clutch 1 controls the first half-
gearbox, which contains the odd
gears (1, 3, 5, 7) and reverse.
Clutch 2 controls the second,
which contains the even gears
(2, 4, 6).
The Sport Chrono Package Turbo
with dynamic engine mount system (standard on 911 Turbo S
models) provides PDK with t wo
additional functions, ‘Launch

Control’ and ‘motor sport- derived
gearshif t strategy’ (page 60).
PDK – sport y, comfortable and
ef ficient. Characteristics that have
been given some thought else -
where too: in the specification for
the 911 Turbo model range.
Three-spoke sports steering
wheel with gearshift switches.
If combined with the optional
PDK, the three-spoke sports
steering wheel (standard on
911 Turbo and 911 Turbo Cabriolet)
has t wo ergonomic switches.
One press with the thumb and
PDK shif ts up. One pull with the
index finger and PDK shifts down.
Either the right or lef t hand can
be used.
The steering wheel rim and airbag
module are covered in smooth
leather, whilst the spoke covers
are painted in Black.
When combined with the Sport
Chrono Package Turbo with
dynamic engine mount system,
there is an additional display
above the airbag module. It tells
you whether the SPORT, SPORT
PLUS and Launch Control func -
tions are activated.
On request, the three-spoke
sports steering wheel with gear -
shift switches for the 911 Turbo
and 911 Turbo S models is also
available as a multifunction steer -
ing wheel (in leather, Aluminium
Look, carbon or macassar).
Steering wheel heating is avail -
able as an option.
Three-spoke sports steering
wheel with gearshift paddles.
The three-spoke sports steering
wheel with gearshif t paddles
(standard on 911 Turbo S models,
optional for 911 Turbo models)
allows you to make motorsport-
st yle gear changes. The paddles
are made from a strong alloy and
are ergonomically located behind the right and lef t steering wheel
spokes. Pull the right-hand paddle
and PDK shifts up. Pull the

left-hand paddle and the PDK
shifts down.
Visually, the steering wheel is
distinguished by its distinctive
high-qualit y t win-spoke design
and silver-coloured galvanised
spoke cover. The airbag module
is finished in the same colour as
the steering wheel rim.
This steering wheel also has an
additional display when combined
with the Sport Chrono Package
Turbo with dynamic engine mount
system. Located in the lef t and
right-hand steering wheel spokes,
it tells you whether SPORT,
SPORT PLUS and Launch Control
are activated.
Another feature reminiscent of
the world of motorsport is the top
centre marking on the steering
wheel rim.
Three -spoke sports steering wheel with gearshif t switches
Three -spoke sports steering wheel with gearshif t paddles
Performance | Transmission
· 44 ·· 45 ·

perfect ratio spread enabling a
smooth transition through the
gears. The gear lever throw is
short and precise, with only
minimal effort required. Thanks
to a dual-mass fly wheel, this

performance is achieved without
any compromise in comfort.
The linkage provides a direct
connection with the gearbox
unit while insulating the lever
from engine vibration.
One final detail – the gear

lever design is exclusive to the
911 Turbo models.
Six-speed manual gearbox.
The six-speed manual gearbox,
available as standard exclusively
for the 911 Turbo models, is
specifically adapted to the unique
characteristics and extremely
high torque of the engine in these
vehicles. Designed primarily
for sports driving, it features a
Hill-start assist.
Hill-start assist comes as standard
for both manual and PDK trans -
missions. It assists the driver in
making a smooth and roll-free
start on an incline.
After braking, the system auto-
matically detects whether the
of manual models), the brake
pressure is reduced once suffi -
cient revs have been generated.
Gear lever
vehicle has come to a stop on a
hill. When the driver releases the
footbrake with the car still in gear,
the brake pressure is retained on
all four wheels for around t wo
more seconds. This temporarily
prevents the vehicle from rolling
backwards. When the driver
accelerates (or accelerates and
releases the clutch in the case
Performance | Transmission
· 46 ·· 47 ·

Steering.
Sensitive and direct, the power-
assisted steering also of fers
accurate feedback from the road.
For a sportscar, driver effort is
minimal. In short: all the precision
of a race- designed system, yet
perfect for everyday road use.
One of the key features of the
steering system is the variable-
ratio gearing. Around the

straight-ahead position, the ratio
is less direct, enabling smoother
manoeuvres on the motorway. It
also reduces the risk of excessive
steering inputs which could
destabilise the car at high speed.
Agilit y and feedback, however,
are maintained.
Turn the wheel harder and the
ratio becomes more direct,
enabling bet ter control through
low-speed corners as well as
easier parking manoeuvres.
The turning circle is a modest
10.9 metres.
19-inch 911 Turbo II wheels.
Fit ted as standard to 911 Turbo
models, the 19 -inch 911 Turbo II
wheels seamlessly combine
function and design.
The car has 8.5 J x 19 wheels
at the front combined with
235/35 ZR 19 t yres. At the rear
are 11 J x 19 wheels with
305/30 ZR 19 t yres. The wheels
are forged, of course, to reduce
weight and unsprung masses.
The material is also very strong,
making it possible to achieve a
fine spoke wheel design which
provides bet ter ventilation of the
brakes.
The five-spoke design is st ylish
and distinctive. The linear
t win spokes have a high -sheen
surface finish, contrasting
with the titanium - coloured base
paint. Part of the wheel rim
also has a high -sheen finish.
The 19 -inch 911 Turbo II wheels.
Proof that dynamism can be
expressed visually.
19-inch RS Spyder wheels with
central locking device.
Reminiscent of the classic
RS Spyder design, these forged
aluminium wheels with a
motorsport-derived central locking
device are available on request
for the 911 Turbo models and are
fit ted as standard to the new
911 Turbo S models. By reducing
rotating masses, they deliver
an even more agile driving expe -
rience. Benefiting from innovative
ongoing developments to the
engineering conventionally used
only in a racing environment, the
striking central locking devices
of fer ef fective protection against
corrosion and are easy to clean.
Alternatively, the 19 -inch
911 Turbo II wheels are available
for the 911 Turbo S models at no
extra cost.
Tyre Pressure Monitoring
(TPM).
Tyre Pressure Monitoring,
included as standard equipment,
warns against t yre pressure
loss. The driver is informed via
the on -board computer display.
The driver can check the pres -
sures of all four t yres from the
instrument cluster. Each time
the t yres are re-inflated, or when -
ever a wheel has been changed,
the updated t yre pressures are
displayed quickly – for increased
comfort and safet y.
19 - inch 911 Turbo II wheel
19 - inch RS Spyder wheel with central locking device
Performance | Chassis
· 54 ·· 55 ·

Sport Chrono Package Turbo
with dynamic engine mount
system.
The Sport Chrono Package Turbo
with dynamic engine mount
system is standard on 911 Turbo S
models and available as an
option for 911 Turbo models.

This integrated system provides
simultaneous enhancement for
engine, chassis and transmission.
Key features include a digital
and analogue stopwatch on the
dashboard, a performance dis -
play, a personal memor y function
in the Porsche Communication
Management (PCM), the SPORT
but ton and – in combination with
PDK – the SPORT PLUS but ton,
and an additional display on the
steering wheel which informs the
driver if the SPORT but tons and Launch Control have been acti
-
vated. The 911 Turbo models
additionally of fer the ‘overboost ’
function. This is how it works:
When ‘Sport ’ mode is selected,
the engine management system
creates a much more aggressive
response to pedal inputs. To do
this, it implements an alternative
throt tle map which relates the
pedal position in the foot well to
a wider angle of opening in the
throt tle body. In higher gears, it
uses a hard rev- limiter to protect
the engine under power.
In the 911 Turbo models, under
full acceleration, the maximum
boost pressure in the lower and
medium speed ranges is now
temporarily increased by approx -
imately 0.2 bar. As a result,
engine torque is boosted by 50 Nm to a maximum of 700 Nm for a
limited period. (The 911 Turbo S
models are configured to operate
with a higher boost pressure level,

which means that their maximum
torque is always 700 Nm.)
In addition to the engine, ‘Sport ’
mode is enabled in the standard
Porsche Active Suspension
Management (PASM) suspension.
The dampers become firmer,
enabling faster turn - in as well as
bet ter contact with the road.
In automatic mode of PDK,
the basic gearshif t pat tern is
switched to high-performance
mode. The gear change action is
virtually instantaneous, while the
shift points are timed for maxi -
mum acceleration. Lif t of f the
throt tle – even at high revs – and
the system automatically shif ts
down to apply engine braking. In
manual shif t mode, gear chang -
ing is faster and more dynamic.
Porsche Stabilit y Management
(PSM) is also adapted, with the
intervention threshold raised. As
a result, the car has a more natu -
ral response to lateral and longi -
tudinal forces. Cornering agilit y
is greatly enhanced, when both braking to turn in and applying
power on exit – particularly

in low-speed bends. For even
greater driving pleasure.
For maximum manoeuvrabilit y,
PSM can be partially disabled
while the car is still in ‘Sport ’
mode. PSM simply monitors the
forces acting on the car and
will only intervene in the most
critical scenarios, e.g. when ABS
assistance is required on both
front wheels.
In conjunction with PDK (standard
on 911 Turbo S models), the
Sport Chrono Package Turbo with
dynamic engine mount system
has t wo additional functions that can be activated via the SPORT
PLUS but ton, for a sport y drive
that borders on a motorsport
experience.
The first function is ‘Launch
Control’, which, for example
when per forming laps, helps you
achieve optimum acceleration
from a standing start, a racing
start in other words.
The function works like this:
press the SPORT PLUS but ton
when the transmission is in ‘D’
or ‘M’. Then, with your lef t foot,
press the brake pedal and accel -
erate fully with the right foot.
The car recognises ‘Launch’ mode
from the accelerator kickdown action and adjusts the engine
speed to the optimum level,
which is around 5,000 rpm. At
the same time, boost pressure
is increased to approximately

0.5 bar, engine torque is
increased and the clutch is
applied lightly. ‘Launch Control’
now appears in the steering
wheel display. Now release the
brake as quickly as you can –
and feel the acceleration power
unleashed to the road.
Steering wheel display with PDK and Sport Chrono Package Turbo
Performance | Chassis
· 58 ·· 59 ·

Headlights.
The Bi-Xenon headlight system is
fit ted as standard. The brightness
of the lights is approximately
t wice as great as that of conven-
tional halogen lights. Light output
is improved and the road illu -
minated more uniformly on both dipped and main beam, helping
to minimise driver fatigue.
Also included is dynamic range
control to prevent hazardous
dazzling of oncoming vehicles
due to undulations in the road
or the loading of the car. A head -
light cleaning function is also
incorporated.
Dynamic cornering lights
(standard on 911 Turbo S models,
optional for 911 Turbo models)
of fer particularly ef fective
illumination of the road ahead,
especially through bends. Sen -
sors continuously monitor the
speed, lateral acceleration and
steering lock and, from these
variables, calculate the course
of the bend. This determines
the angle of illumination for the
dipped beam lights, up to a
maximum of 15 degrees. On

t wisting roads, this means the
course of the road and obstacles
can be seen earlier by the driver.
Lighting concept.
The lighting concept also benefits
from the latest technology, in the
form of high -performance LEDs
for the horizontal front indicators
and also for the separate day time
running lights, the taillights and
the third brake light in the rear
wing.
In addition to the distinctive look
that makes the car very recog -
nisable, the lighting also provides
high illuminating power. The brake
lights also respond very quickly,
meaning that following traf fic is
alerted sooner. Plus the lighting
saves energy, is environmentally
sound and has a longer service
life in comparison to conventional
bulbs.When the vehicle is opened or
closed using the key remote, the
‘Welcome Home’ lighting function
automatically switches on the
LED day time running lights.
Two additional lights inside each
door ensure you see and are seen
bet ter when get ting into and out
of the car.
One effective way of relaxing:
breathe steadily.
Safety.
Quickening pulses whilst
simultaneously creating
calm. Yet another apparent
contradiction typical
of the performance of the
911 Turbo concept.
Dynamic cornering lights
Responsibility | Safet y
· 64 ·· 65 ·

Porsche Ceramic Composite
Brake (PCCB).
The new 911 Turbo S models are
equipped as standard with a
braking system that has already
proved it can withstand even
the toughest racing conditions,
such as those encountered in
the Porsche Mobil 1 Supercup.
That system is the Porsche
Ceramic Composite Brake
(PCCB). PCCB is available as an
option for 911 Turbo models. The ceramic discs have a dia
-
meter of 380 mm at the front and
350 mm at the rear. The discs
are made from a specially treated
carbon -fibre compound that is
silicated in a high -vacuum process
at 1,700 °C. The resulting mate -
rial
is not only much harder than
metal, it is also more resistant to
heat.
Even at high temperatures,
the thermal resistance of the

PCCB disc ensures excellent
dimensional stabilit y. The ceramic
material is totally resistant to
corrosion and offers excellent
acoustic damping properties.
The pads are mounted in six-
piston monobloc aluminium fixed
calipers at the front, with four-
piston units at the rear. The
resulting brake forces are both
extremely high and remarkably
consistent. The pedal response is
fast and precise with only moder -
ate input required.
PCCB enables shorter braking
distances in even the toughest
road and race conditions. Excel -
lent fade resistance ensures
greater balance when slowing
from racetrack speeds.
The key advantage of PCCB is
the total weight saving of approximately 50
% over metal
discs with similar construction
and dimensions. As well as
enhancing performance and fuel
economy, this represents a major
reduction in both the unsprung
and rotating masses. This,
of course, produces additional

benefits in terms of comfort
and road-holding on uneven
road surfaces as well as general
handling and agilit y.
Please note that circuit racing,
trackday use and other forms of
performance driving can signi -
ficantly reduce the service life of
even the most durable pads and discs. As with conventional high-
performance braking systems,

we recommend that all brake
components be professionally
inspected and replaced where
necessary after every track event.
PCCB
Responsibility | Safet y
· 68 ·· 69 ·

Fuel consumption and recycling.
Intelligent light weight construction
is a fundamental aspect of design
at Porsche. For both economic
and ecological reasons. This forms
the basis for achieving low fuel
consumption values combined
with outstanding performance.
It is economical thanks to the
high proportion of cast aluminium
alloys, magnesium, plastics and
high-strength sheet steel, the
lat ter being much stronger and
lighter than conventional steel.
The 911 Turbo and 911 Turbo S
models consist of almost 20 %
lightweight alloys.
It is also ecological because all
materials used are carefully
selected. Only the latest, environ -
mentally sound components are
used. All light weight materials are
easily recyclable, while the variet y
of synthetic components has been
reduced. Recycled plastics are
used in all areas of the car where
they meet our exacting technical
requirements. To simplify process -ing, all materials are labelled for
separate recycling.
In short, approximately 95
% of
today’s 911 Turbo and 911 Turbo S
models can be recycled.
Porsche primarily uses environmen -
tally friendly water-based paints.
All areas of the 911 Turbo and
911 Turbo S models are free from
asbestos, CFCs and components
manufactured using CFCs. Because
at Porsche, helping the environ -
ment doesn’t start at the end of a
vehicle’s life. It starts right at
the beginning at the planning and
development stages.Fuel.
The current 911 Turbo generation is
already compatible with fuels that
have an ethanol content of up to
10 %. A ‘biofuel’ made from naturally
replenishing materials, ethanol has
a positive impact on the carbon
dioxide balance since the plants
grown for its production also
absorb carbon dioxide from the
atmosphere. Hydrocarbon emissions from the
fuel supply system are low,
achieved through a combination of
an active carbon filter and a
special fuel-tank coating. All fuel
lines are made from aluminium,
whilst those carrying vapours are
made from multi-layer plastic.
Noise.
The 911 Turbo and 911 Turbo S
models comply with all current
noise regulations – without resort
-
ing to engine encapsulation.
To achieve this, we’ve eliminated
noise at source: engine compo -nents are more rigid, moving
parts lighter and tolerances
reduced to a minimum. High-

efficiency silencers and resona -
tors in the intake system help
to reduce noise even further. For
the entire service life of the car.
Responsibility | Environment
· 76 ·· 77 ·