ESP PORSCHE CAYNNE 2008 1.G Information Manual

Versatility. The spirit of the
Cayenne. Superlative performance
on road and track. Exceptional
capability off road. Powerful yet
practical in every scenario. Always
100 % Porsche.
Enhancing your enjoyment is the
new Porsche Communication
Management (PCM) featuring
navigation, touchscreen display
and MP3 compatibility. Sports
seats with added lateral support
are available for all four Cayenne
models (standard in Cayenne GTS).
The Porsche Ceramic Composite
Brake (PCCB) is optional equipment
on the Cayenne S, Cayenne GTS
and Cayenne Turbo.
The Cayenne range comprises
four unique models, each with a
powerful presence. Agile and
dynamic, they generate excite-
ment in their own individual way.
· 12 · · 11 ·· 13 ·
Performance. It’s what motivates
our engineers – and exhilarates
our drivers. Winning races,
exploring new terrain, achieving
new objectives.
With the Cayenne model range,
we’ve applied this power to an
ambitious range of applications.
The result is four highly
versatile cars – every
one of them a Porsche.
At Porsche, we believe in playing to our strength:
the pursuit of excellence in every respect.
The Cayenne models.
The Cayenne models
One thing they have in common
is the standards they set: in
performance, safety and economy.
The character of each car is
apparent at first glance: accom-
plished, athletic, brimming with
energy and potential. The front
and rear sections are elegantly
designed with excellent aerodynamic
properties. The flared wheel arches
accommodate a range of wheel
options up to 21 inches in diameter.
Among the most distinctive features
on all four models is the elongated
headlight geometry. In addition,
each car has LED taillights as
standard (see page 93).
The stylish form is brought
thrillingly to life with remarkable
engine performance. The high-
capacity engines offer increased
power and torque with relatively
modest fuel consumption. This is
achieved using a range of technol-
ogies
, including direct fuel injection
(DFI – see page 50) and VarioCam
Plus on the V8 engines (see page
53).
The sports-oriented suspension can
be further refined with the optional
Porsche Dynamic Chassis Control
(PDCC – see page 80), an active
anti-roll stability system. Safety is an equally important consideration,
with Porsche Stability Management
(PSM – see page 98) included
as standard equipment. The race-
proven Porsche Ceramic Composite
Brake (PCCB– see page 96) is
also available as optional equipment.
The Cayenne models.
Ready for every eventuality.

The Cayenne GTS has a sports
exhaust system that is also
available as an option on the
Cayenne S (in conjunction with
Tiptronic S). As well as enhancing
the engine sound, it features
chrome-plated dual-tube tailpipes.
The Cayenne models
Cayenne S and red on the Cayenne
GTS and Cayenne Turbo. All four
models are equipped with Porsche
Stability Management (PSM) as
standard. PSM is an electronic
active safety system that automat-
ically stabilises the car (and trailer,
if fitted) in critical road scenarios.
Another standard feature is the
‘Sport’ mode function. At the
push of a button, the engine
and Tiptronic S become more
responsive, the air suspension
drops to Low Level I, while PASM
and PDCC are also switched to
‘Sport’ mode.
Standard fitment wheels are 17-inch
Cayenne alloys on the Cayenne,
18-inch Cayenne S II alloys on the
Cayenne S and 19-inch Cayenne
Design alloys on the Cayenne Turbo.
Among the special sports features
on the Cayenne GTS are the stand-
ard 21-inch Cayenne Sport wheels.
The brake performance is more
than a match for the power of each
Cayenne model. All four cars have
six-piston monobloc aluminium fixed
calipers at the front and four-piston
units at the rear. The calipers are
black on the Cayenne, silver on the Another feature that’s standard on
the Cayenne Turbo and optional
on the other three models is self-
levelling air suspension with Porsche
Active Suspension Management
(PASM – see page 76). PASM
is an electronic damping control
system offering a choice of
increased comfort or added sports
performance. The Cayenne GTS
is equipped as standard with an
exclusive steel-sprung sports sus-
pension that also includes PASM.
The air suspension system and
PASM can also be combined with
Porsche Dynamic Chassis Control
(PDCC) on all models. This optional
system actively reduces body-roll
when cornering, thereby enhancing
turn-in response. The results: greater
agility, greater comfort and even
greater driving pleasure.For easier loading, there’s an
optional automatic tailgate with
user-programmable opening
height and push-button operation.
· 19 · · 18 ·

Model range
Exceptional performance.
What else would you expect from a Porsche?
The Cayenne.
A high-performance six-speed
manual gearbox is standard
equipment. The optional six-speed
Tiptronic S includes gearshift
controls on the steering wheel.
It is also equipped with standby
control for better fuel economy
(see page 64).
The powerful brakes increase
active safety in all driving scenarios.
The black-finish calipers are unique
to the V6 model.
With its precision steering and
sports chassis setup, the Cayenne
is agile and responsive. Using
Porsche Traction Management (PTM)
and Porsche Stability Management
(PSM), power is transmitted through
the permanent all-wheel drive with
efficiency, precision and safety. In
difficult terrain, the electronically
variable centre differential combines
with the anti-slip regulation (ASR)
and automatic brake differential
(ABD) to maintain optimum traction
at all times. This ability is enhanced
in low-range mode, where all gear
ratios are reduced. As a result,
the car remains mobile in soft
ground and performs better when
towing a heavy trailer load. For
the toughest off-road conditions,
the electronically variable centre
differential can be fully locked while
in low-range mode using the PTM
control on the centre console.
The torque split is then fixed with
38 % of drive being transmitted
to the front wheels and 62 % to
the rear.
For extreme off-road use, there’s
the optional Off-road Technology
package. As well as increasing
underbody protection, it includes
an electronically variable rear
differential (see page 89). This
differential can also be manually
locked to increase off-road
traction.
The Cayenne is an excellent on-
road performer with a wide range
of other talents: off-road capability,
comfort, safety, sporting style and
practicality.
Its powerful V6 engine features
direct fuel injection (DFI), variable
valve timing on inlet and exhaust
and a variable resonance intake
manifold. The results: generous
performance and excellent fuel
economy.
The 3.6-litre engine develops
213 kW (290 hp) at 6,200 rpm.
Maximum torque is 385 Nm
from as low as 3,000 rpm. With
a manual gearbox, it requires
8.1 seconds to reach 100 km / h
(62 mph). Maximum speed is
227 km / h (141 mph).
Press the standard ‘Sport’ button
and the engine management is
adjusted to maximise throttle
response.
· 23 · · 22 ·

The Porsche ‘S’ has long been
a mark of heightened sports
performance. On the Cayenne S –
as on many cars before – it means
power, athleticism, more efficient
dynamics – even greater driving
pleasure.
To experience its effects, simply
drop down a gear on the six-speed
manual gearbox (option: six-speed
Tiptronic S) and open up the
throttle on the 4.8-litre V8 engine.
Thanks to direct fuel injection (DFI),
the effect is immediate with drive
transmitted to a set of 18-inch
Cayenne S II wheels. The car is
propelled to 100 km / h (62 mph) in
as little as 6.6 seconds. Maximum
speed is 252 km / h (157 mph).
The naturally aspirated V8 develops
283 kW (385 hp) at 6,200 rpm.
Maximum torque is 500 Nm
from 3,500 rpm. This exceptional
performance is, in part, achieved
with the aid of variable valve
timing and two-stage valve lift
(VarioCam Plus). This system is
also responsible for the smooth
running characteristics, significantly
improved fuel economy and lower
exhaust emissions.
The engine sound is typically
Porsche – even more so with the
optional sports exhaust system
(available in conjunction with
Tiptronic S). As well as enhancing
the acoustics of the car, it features
twin chrome-plated stainless
steel tailpipes. The sports exhaust
has a ‘Sport’ sound setting that
is automatically enabled when the
general ‘Sport’ mode is selected.
Reaches places that others can only dream of.
Like the heights of driving pleasure.
The Cayenne S.
The handling characteristics and
driving properties are exemplary
for a car of such versatility. Equally
impressive are the standard safety
systems, including larger brakes
with distinctive silver-finish calipers.
Porsche Stability Management (PSM)
is standard on all Cayenne models
and provides a further reduction in
braking distances (see page 98).
The Porsche Ceramic Composite
Brake (PCCB) is available as optional
equipment on the Cayenne S,
Cayenne GTS and Cayenne Turbo.
The driving dynamics can be
further enhanced with the optional
air suspension featuring Porsche
Active Suspension Management
(PASM – see page 76).
Model range
· 27 · · 26 ·

Model range
More agility. More efficiency. More safety.
So far, it all makes perfect sense.
The Cayenne Turbo.
This enormous potential is trans-
mitted to the road through the stand-
ard six-speed Tiptronic S.Running
on 19-inch Cayenne Design
wheels,
the benchmark sprint to
100 km / h
(62 mph) is completed in just
5.1 seconds. At 210 km / h (131 mph),
the standard air suspen
sion is
automatically lowered to
increase
stability and aerodynamic
efficiency.
Maximum speed is 275 km / h
(171 mph).
Porsche Active Suspension
Management (PASM) continuously
modifies the damping force on
each wheel based on changing
road conditions and driving style.
The optional Porsche Dynamic
Chassis Control (PDCC) helps to
minimise body-roll when cornering.
This not only enhances occupant
comfort, it also improves contact
with the road. Pulse rate climbing. Shiver down
the spine. Both natural reactions
in a turbocharged Porsche.
The Cayenne Turbo is one of the
most remarkable examples of
the Porsche performance principle.
Blending power with comfort,
it does so in style without ever
compromising on either.
Start the ignition, and immediately
you sense the energy latent in
the 4.8-litre twin-turbo V8.
Featuring direct fuel injection (DFI),
it develops 368 kW (500 hp) at
6,000 rpm. Maximum torque
of 700 Nm is available between
2,250 and 4,500 rpm.Press the ‘Sport’ button on the
centre console and the throttle
becomes more responsive,
the engine more dynamic and
Tiptronic S more direct. At
the same time, Porsche Active
Suspension Management (PASM)
is also switching to ‘Sport’ mode.
The air suspension is automatically
lowered to the more streamlined
Low Level I.
· 35 · · 34 ·

440
400
360
320
280
24 0
20 0
160
120
80 900
850
800
750
700
650
600
550
500
450
2000 4000 6000
Our greatest motivation:
to exceed our own achievements.
Powerkit Cayenne Turbo.
The Porsche Turbo is a simple
concept: ultimate performance in
every respect. The Cayenne Turbo
continues this tradition with power,
dynamism and agility. This capability
can only be achieved when you’re
always striving to improve. Which
is why even the Cayenne Turbo
can offer increased power and,
with it, greater active safety.
The optional Powerkit Cayenne
Turbo increases maximum output
from 500 to 540 hp.
This is achieved using a new
intake manifold and a number
of modifications to the engine
management system. The result:
397 kW (540 hp) at 6,000 rpm.
Maximum torque is increased by
50 Nm to 750 Nm (between
2,250 and 4,500 rpm). Acceleration
to 100 km / h (62 mph) requires
just 4.9 seconds. Maximum speed
is 279 km / h (173 mph).
Even the engine compartment
immediately conveys the promise
of pure performance. Special
features include a throttle body
cover in carbon fibre and a plaque
in brushed aluminium. These are combined with a titanium-coloured
intake manifold with carbon inlays
and silver-coloured ‘turbo’ logo.
The propeller shaft has also been
revised to match the increased
loads. The overall result:
even greater exhilaration on
the racetrack, even greater
responsiveness on the road.
Drive
Powerkit Cayenne Turbo*
Fuel consumption**
Urban 22.5 l/100 km (12.6 mpg)
Extra urban 10.5 l/100 km (26.9 mpg)
Combined 14.9 l/100 km (19.0 mpg)
CO2emissionsCombined 358 g/km
· 47 · · 46 ·
397 kW
(540 hp)
Power (kW)
Torque (Nm)
Cayenne Turbo with Powerkit
Cayenne Turbo with standard engine
750 Nm
(2,250 – 4,500 rpm)
Engine speed (rpm)Cayenne Turbo engine with Powerkit
** Only available in conjunction with 19-inch Porsche wheels or larger (with requisite approval).
** Emissions were recorded in accordance with Directive 80/1268/ EC on standard vehicles as valid at the time of publication.
The respective figures were not recorded on individual vehicles and do not constitute part of the offer.
This data is provided solely
for the purposes of comparison between the respective models. For more information, pleasecontact your Porsche Centre.

Controlling fuel delivery for optimum combustion.
Direct fuel injection (DFI).
Drive
designed to improve power, torque
and emissions. The swirling of the
injected fuel creates a homogenous
air/fuel mix, thereby enhancing
combustion.
At engine speeds up to 3,500 rpm,
a double injection process is used.
Here, the required fuel volume
is delivered in two successive
injections per working stroke. The
results are faster catalyst warm-up
and increased torque in the upper
load range. All four Cayenne engines feature
direct fuel injection.
As the name suggests, fuel is
injected directly into each
combustion chamber using electro-
magnetic injectors offering
extremely high precision in
terms of both timing and volume.
A high-pressure pump provides
the necessary pressure of up to
120 bar.
The injector position and spray
geometry have been carefully
From road to racetrack. At the push of a button.
‘Sport’ button.
Throttle response in ‘Sport’ mode
Throttle response
in ‘Normal’ mode
Both sets of characteristicsare dependent on engine
speed.
Pedal travel (%)
(%) Torque
(as percentage of maximum)
All Cayenne models have a
standard ‘Sport’ function with
a choice of comfort-oriented
(‘Normal’) or high-performance
(‘Sport’) setup.
When ‘Sport’ mode is enabled
using a button on the centre
console, the engine management
system selects a more ‘aggressive’
map for the electronic throttle.
The pedal response is quicker
and the engine more dynamic
and direct. On vehicles with
Tiptronic S, upshifts are performed
later, downshifts earlier. The
chassis control systems PASM
and PDCC (if present) are also
set to ‘Sport’ mode. Cars with
air suspension are lowered to
Low Level I, creating a firmer
ride, more positive turn-in and
better contact with the road.
The ‘Sport’ sound mode on the
sports exhaust system (standard
on Cayenne GTS; optional on
Cayenne S with Tiptronic S) is
also enabled when ‘Sport’ mode
is selected.
‘Sport’ button on centre console Comparison of electronic throttle map in ‘Normal’ and ‘Sport’ mode
By mixing the fuel and air directly
in the combustion chamber, DFI
contributes to engine cooling.
As a result, it was possible
to increase the compression
ratio and therefore output and
efficiency.
The engine management system
regulates the injection process
based on changing output require-
ments. Oxygen sensor circuits
are used to monitor emissions
and minimize impact on the
environment (see page 60). This
also reduces ownership costs.
· 51 · · 50 ·

Plus selects the higher lift setting
and retards valve timing.
At medium revs and minimal
load, the valve lift is lowered and
timing advanced to minimise
fuel consumption and emissions.
At low engine speeds in particular,
VarioCam Plus significantly
The V6 engine in the Cayenne
features variable valve timing on
both inlet and exhaust.
The camshaft phase angles are
continuously varied by the engine
Increasing torque.
Reducing fuel consumption.
VarioCam Plus in the V8 and V8 turbo engines. The epitome of adaptability. And that’s just the engine.
Variable valve timing in the V6 engine.
management system via rotary-
vane
adjusters.
Each cylinder has four valves
actuated by roller cam followers
featuring hydraulic valve clearance
adjustment. The results: high
specific power and torque – even
at low engine speeds. Above all,
this technology improves fuel
economy while further reducing
emissions.
Drive
improves fuel economy. To achieve
maximum power and torque, the
valve lift is raised and the timing
advanced.
Overall, the system offers
greater reserves of power and
torque with relatively modest
fuel consumption.
VarioCam Plus creates two engines
out of one by steplessly adjusting
the inlet valve timing and lift.
The system differentiates between
normal road usage and performance
driving, adapting seamlessly as
driver inputs change. All functions
are automatically controlled by
the engine management system.
All
you experience is responsive
acceleration and ultra-smooth
running characteristics.
The valve lift system consists of
electro-hydraulically switchable
tappets.
Inlet valve timing is steplessly
varied using rotary-vane adjusters.
To improve response when starting
from cold for example, VarioCam
· 53 · · 52 ·VarioCam Plus (V8 engines)

There is one fuel that will always be free.
Which is why we make the most of it.
Air intake system.
The Cayenne models are all
equipped with a resonance air
intake system. This simple
technology uses the pressure
waves generated by the inlet
valves to ‘force’ air into the engine.
The effect is enhanced in
the Cayenne, Cayenne S and
Cayenne GTS by a two-stage
intake manifold. This combines all
the benefits of a long intake tube
(higher torque at low rpm) with
those of a shorter length (more
power at higher rpm). On theCayenne GTS, performance is
enhanced by optimised airflow
management in the intake manifold.
Although ‘naturally aspirated’,
the Cayenne, Cayenne S and
Cayenne GTS provide high torque
ratings across the entire engine
speed range.
Drive
Pressure is often the key to performance.
Turbocharging system in the Cayenne Turbo.
The Porsche Turbo is synonymous
with performance, exhilarating
acoustics and the finest engineering.
The Cayenne Turbo has twin
turbocharger units arranged in
parallel. The low-volume intake
pipes combine with short exhaust
manifolds to achieve a rapid,
emphatic response.
Incoming air is passed through a
filter and compressed by the turbine
units. Its temperature is then
reduced in the intercooler system,
which improves cylinder charging
and limits thermal loads on the
engine.
Boost pressure reaches 1.8 bar
(absolute pressure) under full
acceleration from just 2,500 rpm.In normal road driving (part-throttle
mode), the pre-throttle boost
pressure is reduced in order
to
maximise fuel economy. When
the car is driven more assertively,
the
turbines are ‘pre-spun’ so
as to increase the pressure
available. When the throttle is
finally opened, the boost can
be applied immediately.
Both turbo units are cooled by
dedicated circuits from the main
engine cooling system.This solutionprevents oil degradation due to
overheating.
For the driver, the result is
seamless delivery of phenomenal
power and torque.
· 55 · · 54 ·

· 58 · · 57 · · 56 ·
Used to regulate /control Input data Used to regulate /control
Engine management system
(MED 9.1)
Engine load
Throttle-valve angle
Oxygen sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Throttle pedal position
Temperatures
– Coolant
– Intake air
– Engine oil
– Ambient air
Zündung
Direct fuel injection (DFI)
Idling via throttle valve and ignition
Heating elements in oxygen sensors
Demand-controlled fuel pump
Fuel-tank venting
CAN interface to PSM control unit, transmission control unit, engine immobiliser, instrument cluster,
air-conditioning control unit, ‘Sport’ button, on-board diagnostics, etc.
Input data
Camshaft phase angle
Engine fan
Starter
Fuel pressure
Throttle valve
Intake manifold resonance valve
Engine management functions in the Cayenne S, Cayenne GTS and Cayenne Turbo. Engine management functions in the Cayenne.
Drive
Maximum freedom requires total control.
Electronic engine management.
The electronic engine management
system provides coordinated
regulation of all engine functions
and associated systems in all
operating conditions.
The basic principle of engine
management is simple. Throughout
each journey, the system monitors
a range of input data and compares
it with corresponding sets of
reference values (‘maps’). Key
engine functions, such as ignition
and fuel injection, can be seamlessly
and automatically adjusted. The
results: optimum fuel economy and
lower emissions as well as greater
power and torque.One of the most important systems
controlled by engine management
is the electronic throttle, a
prerequisitefor Porsche Stability
Management
(PSM). Other major
functions include on-board diagnos-
tics and cylinder-specific knock
control featuring automatic compen-
sation for changes in fuel quality.
On the Cayenne, Cayenne S
and Cayenne GTS, the engine
management system controls
the variable-tract intake manifold.
On the Cayenne Turbo, it regulates
the turbo boost pressure.
Fuel pressure
Oil pressure
Engine management system
(EMS SDI 4.1)
Throttle-valve angle
Oxygen sensor signals
Engine speed (from crankshaft)
Inlet camshaft phase angle
Knock sensor signals
Vehicle speed
Air-conditioning settings
Throttle pedal position
Temperatures
– Coolant
– Intake air
– Engine oil
– Ambient air
Ignition
Direct fuel injection (DFI)
Idling via throttle valve and ignition
Heating elements in oxygen sensors
Demand-controlled fuel pump
Fuel-tank venting
CAN interface to PSM control unit, transmission control unit, engine immobiliser, instrument cluster,
air-conditioning control unit, ‘Sport’ button, on-board diagnostics, etc.
Valve lift (VarioCam Plus)
Engine fan
Starter
Fuel pressure
Throttle valve
Intake manifold resonance valve
(Cayenne S/Cayenne GTS)
Fuel pressure
Oil pressure
Wastegate frequency valve
(Cayenne Turbo only)
Bypass valves (Cayenne Turbo only)
Camshaft phase angle
Oil pressure
Engine load
Ignition
Cylinder-specific knock control
Cylinder-specific knock control