New Porsche 911 Turbo S (992) 2021 Review Interior Exterior.

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The new engine of the Porsche 911 Turbo S is based on the current 911 Carrera engine generation.

It features a completely redesigned charge air cooling system; new, larger variable turbine
geometry (VTG) turbochargers in a symmetrical layout with electrically adjustable wastegate
flaps; and piezo injectors, which significantly benefit the vehicle’s responsiveness, power, torque,
and its free-revving nature. The new six-cylinder is engine fed with air via a new intake system. The previous routing of 6 process air and charge air cooling was reversed: The charge air coolers, which are 14 percent larger than on the previous model, have been moved from their previous position in the rear fenders to directly behind the engine, increasing the flow rate of cooling air by about 13 percent.

The air filters are now positioned in the rear fenders, with air being fed via four intakes located
laterally below the rear wing and in the rear side panels with a larger overall cross-section and
lower resistance, helping to improve engine efficiency. Two symmetrical turbochargers with
variable turbine geometry (VTG) and larger internals replace the previous parts, with wheels now
rotating in opposite directions on the left and right side of the vehicle. The diameter of the turbine
wheels has been increased by five millimeters to 55 mm, while the 61 mm compressor wheel is
now three millimeters larger than before. The wastegate flaps are electrically controlled using
stepper motors.
The adaptive aerodynamics – launched as a world first on the previous model – have been further
refined and extended for the new 911 Turbo S. New functions include Wet mode and air brake. If
the standard sensors detect a wet road surface, the driver will be notified by a message in the
instrument cluster. The driver can then activate Wet mode using the rotary switch on the steering
wheel.

The aerodynamic control systems then switch the balance to generate a higher downforce
on the rear axle, which in turn increases the contact between the tires and road.
Furthermore, the 911 Turbo S features an air brake function. In case of emergency braking at
high speeds, the front spoiler and rear wing are moved to the performance position. The higher
drag force and increased downforce reduce the braking distance, depending on the initial speed
and road conditions.

Driving stability is also improved during braking with this feature.
The optimized active aero systems enable even better adjustment of the car’s aerodynamic
properties to suit different driving requirements. The newly designed active front spoiler and rear
wing increase downforce by 15 percent compared to the previous 911 Turbo S to guarantee
enhanced driving stability and dynamics at higher speeds. The maximum downforce in the
performance position (Sport Plus mode activated) is now around 375 pounds (170 kg). When
track speeds exceed 160 mph, the rear wing is adjusted to a slightly flatter angle in the
performance position.

This reduces the maximum load on the rear axle and improves race track
performance. In conjunction with the other aerodynamic configurations – Eco, Speed, and Wet
modes as well as the air brake function – the new 911 Turbo S delivers a greater aerodynamic
control range and adapts to the particular driving situation.

The newly developed controlled cooling air flaps in the front intakes make it possible to achieve
lower drag and improved fuel consumption by closing completely at speeds between 43 mph and
93 mph. The most efficient configuration with a minimum drag coefficient (Cd) value is achieved
with closed flaps and retracted front and rear spoilers. The flaps open from 93 and are fully open
at speeds above 105 mph to improve aerodynamic balance at high speeds.
The cd varies depending on the aerodynamic setting from 0.33 in Eco mode to 0.38 in the Performance setting.

The new front end with wider air intakes has a characteristic Turbo-look with dual front light
modules as well as standard LED Matrix-design headlights with dark surrounds. The redesigned,
pneumatically extendable front spoiler and the larger rear wing deliver 15 percent more downforce
compared to the previous model. The muscular rear fenders with integrated air intakes emphasize
the sleek body of the 911 Turbo S. Rectangular tailpipes in high-gloss Black, characteristic of the
911 Turbo S, complete the muscular look.

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