Supreme Top-of-the-Range Model
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Cayenne Turbo SIn January 2006 a new top-of-the-range model is taking over the leading position within the Cayenne model series: Second only to the Carrera GT, the Cayenne Turbo S is the most powerful Porsche homologated for road use.
Upgraded turbocharger system The “basic" 4.5-litre V8 engine featured in the new top-of-the-range Cayenne remains unchanged in principle, modification of the two intercoolers serving to boost both engine output and torque to a new level of performance. Fitted between the turbochargers and the throttle butterfly, the intercoolers serve to cool the compressed air supplied to the engine, improving the cylinder charge in the process. The heat exchangers fitted up front of the wheel arches, together with the air supply and dis-charge ducts, are now made completely of aluminium and are 13 millimetres or 0.51" larger than on the Cayenne Turbo, ensuring a much higher level of efficiency and, at the same time, a significant improvement of flow conditions in the radiator, with the loss of pressure loss down by more than 50 per cent. Porsche’s development engineers have also used these positive effects to increase boost pressure, depending on the speed range, by up to 0.2 bar to a maximum of 1.9 bar, with engine output increasing further in the process. However, it is only the concurrent optimisation of engine efficiency that really confirms the supreme standard of engine management achieved by the new power unit, the Cayenne Turbo S not consuming any more fuel than the “regular" Cayenne Turbo in the same speed range. Average fuel consumption in the standardised consumption test, therefore, is 15.7 litres premium plus (equal to 18.0 mpg Imp) in both cases. And it goes without saying that the new top-of-the-range Cayenne complies in full with the EU 4 emission standard. Eight-cylinder with substantial reserves Even in its “basic" trim and configuration the engine is easily able, through its strong and sturdy components, to meet the highest loads and requirements. Particular features of this four-valve power unit are VarioCam technology allowing a cam adjustment angle of 25o, as well as integrated dry sump lubrication for reliable lubrication of all engine components even under extended periods of high lateral acceleration. Configured in closed deck design, the crankcase is closed at the top by a cover plate resting on the cylinder head and forms a complete, self-contained system together with the cylinder cooling ducts in the interest of a very high level of stiffness. Able to run at an extreme angle of up to 45o both in longitudinal and lateral direction, finally, the engine is perfectly suited for even the toughest offroad conditions. Six-speed automatic transmission
Four-wheel drive for optimum traction
Porsche Traction Management for supreme driving dynamics PTM Porsche Traction Management has a significant effect on the supreme standard of driving dynamics the Cayenne is able to offer: The longitudinal lock masterminded by map control and the optional differential lock on the rear axle included in the Advanced Offroad Technology Package not only respond to a lack of traction on the front and rear axles, but also interact with sensors measuring the speed of the car, its lateral accretion, the steering angle and the position of the gas pedal, allowing PTM to calculate the optimum degree of lock on both axles at all times and thus distribute exactly the drive power required to each axle. PTM thus ensures a high level of agility in bends plus exemplary driving stability when changing lanes both at high speeds and when driving on ice and snow at a lower speed. Superior chassis and suspension with air springs and adaptive self-levelling With the chassis and suspension of the entire Cayenne model series being developed from the start to meet the greatest demands and requirements, Porsche was able to carry over the entire concept of this exceptional SUV to the new top-of-the-range model without making any changes: The front axle with rack-and-pinion steering comes in double control arm configuration, with the entire axle resting on its own subframe. The rear axle, in turn, is an elaborate multi-arm configuration also supported by a subframe The Cayenne Turbo S comes as standard with air springs allowing no less than six different levels of ground clearance for optimum conditions and driving qualities both at very high speeds and when driving offroad. Benefiting from integrated self-levelling, the suspension offers the further advantage of consistent ground clearance and body trim, regardless of the load the vehicle is currently carrying. And the automatic reduction in ride height in two steps down from the normal level obviously makes a significant contribution to enhanced driving safety at the very high speeds the Cayenne Turbo S is able to achieve. Variable damper system featured as standard PASM Porsche Active Suspension Management also comes as standard on the Cayenne Turbo S. This electronic, variable damper adjustment system controls damper forces infinitely as required, depending on surface conditions and the driver’s style of motoring. As an example, PASM will intervene under very dynamic driving conditions involving powerful acceleration and application of the brakes, as well as on winding roads with many bends. A further advantage achieved in this way is the reduction of roll and body sway in the interest of enhanced smoothness. Modified high-performance brake system Reflecting the supreme performance of the Cayenne Turbo S, Porsche’s development engineers have increased brake power accordingly, the new model featuring even larger brake discs with larger callipers than on the Cayenne Turbo: To be specific, the diameter of the front brake discs is up from 350 to 380 millimetres (13.78 – 14.96"), the diameter of the rear brake discs has been increased from 330 to 358 millimetres (12.99 – 14.09"). Opting for new cooling ducts improved in their geometry, Porsche’s engineers have succeeded at the same time in increasing heat dissipation by 10 per cent. In standard trim the Cayenne Turbo S comes on 20-inch SportTechno wheels running on road tyres measuring R 275/40 Y. A tyre pressure control system is also featured as standard. Safety and equipment of the highest level
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Benefiting from careful improvement and ongoing
development of the turbocharger system, the eight-cylinder biturbo power
unit develops maximum output of 383 kW (521 hp) at 5500 rpm, 52 kW or 71
hp more than the Cayenne Turbo. Maximum torque of 720 Newton-metres or 531
lb-ft, in turn, is maintained consistently all the way between 2750 and 3750
rpm. This supreme output is reflected by truly outstanding performance on
the road: The Cayenne Turbo S accelerates to 100 km/h in 5.2 seconds, sprints
from 80 – 120 km/h in fifth gear in 5.4 seconds, and has a top speed
of 270 km/h or 167 mph. To the outside, the new model betrays its unique
position only through very discreet signs, merely 20-inch SportTechno wheels
and exhaust tailpipes in four-pipe look, the model designation at the rear
and, if ordered by customer, paintwork in Navy Blue Metallic exclusive to
this model showing the onlooker that this is the most powerful Porsche Cayenne
of all times.
Like the engine, the six-speed Tiptronic S automatic
transmission is likewise perfectly prepared for the supreme power and torque
to be conveyed to the wheels, with gearshift points adjusting infinitely
to the driver’s style of motoring and the route he – or she –
is taking. Benefiting from Porsche’s usual standard, the driver is also
able to shift gears manually via paddles on the steering wheel. The additional
option to shift gears instantaneously by briefly flicking the selector lever
forwards or backwards serves above all to ensure a safe and smooth gearshift
process when driving offroad.
Transmission of power to all four wheels is elementary
to the supreme driving dynamics offered by the Cayenne: Permanent Porsche
Traction Management (PTM) all-wheel drive transmits 62 per cent of the
engine’s power to the rear wheels and 38 per cent to the front wheels
in the basic mode. Via a multiple-plate coupling operated by an electric
motor and controlled electronically, power distribution may be varied as
a function of driving conditions with up to 100 per cent of engine power
going to the front or rear, depending on current requirements. This enables
the Cayenne Turbo S to convey the supreme power and torque of the biturbo
engine to the road under dry conditions, without the supply of power and
torque being cut off. The result, therefore, is optimum acceleration under
full power for supreme performance on the road.
The excellent passive safety of the Cayenne Turbo
S results not only from the use of the most modern materials such as
high-strength steel throughout the body of Porsche’s SUV, but also from
the entire structure of the vehicle with three load levels above one another
serving to absorb deformation energy. Inside the Cayenne Turbo S, a wide
range of airbags protects the occupants in a crash, examples being the driver,
front passenger and thorax airbags as well as curtain airbags integrated
in the roof frame and serving to protect the occupants at the rear. This
complete system of largely “invisible” safety elements is enhanced
by a high level of equipment boasting leather upholstery and trim throughout
the interior as well as other comfort components. Inter alia, these include
bi-xenon headlights with dynamically controlled, static curve lights,
electrically adjustable comfort seats at the front with a memory function
and seat heating, as well as heated seats at the rear, automatic air
conditioning, Porsche’s ParkAssistant, Porsche Communication Management,
and the BOSE Surround Sound System all featured as standard.