No. 20-20

Installation and Conversion Instructions
Panamera (971)
20/20
ENU
2601
2
Sports Exhaust System - Silver (0P8) / Black (0P9)
Revision:
This bulletin replaces bulletin Group 2 20/20, dated May 19, 2021.
Model Year:
As of 2021
Vehicle Type:
Panamera 4 E-Hybrid / Panamera 4 E-Hybrid Executive / Panamera 4 E-Hybrid Sport Turismo
including related Platinum Edition variants
Engine Type:
DGP (basic engine) = V6 / 2.9 liter with 243 kW (330 hp);
System power 340 kW (462 hp)
•
Cause:
DGPA with performance class D0D = 243 kW (330 hp)
Retrofitting
Figure 1
Note:
In the sports exhaust system, the signal for activating the flaps in the rear silencers (NSD) comes from
the respective current map in the DME control unit. The driving status and accelerator pedal position, for
example, are decisive factors.
The sports exhaust system can be switched on and off separately using the Porsche Communication
Management system (PCM  Figure 1). To do this, select the menu “Car”, then “Drive” and then “Sports
exhaust system”.
The sports exhaust system is also active in the “SPORT” or “SPORT PLUS” driving modes.
The engine power and exhaust behavior of the vehicle are not affected.
Tequipment
Jun 29, 2023
Page 1 of 21
2
Panamera (971)
2601
ENU
20/20
Installation and Conversion Instructions
The sports exhaust system is also available straight from the factory for new vehicles by requesting
optional equipment ‘0P8 – Sports exhaust system (Brushed stainless steel look tailpipe)’ or ‘0P9 – Sports
exhaust system (Black chrome-plated look tailpipe)’.
Part No.:
ONLY vehicles with a short wheelbase (0E1):
971.044.232.A
971.044.232.B
 Sports exhaust system – Tailpipe in Silver chrome-plated look,
set
 Sports exhaust system – Tailpipe in Black chrome-plated look,
set
ONLY vehicles with long wheelbase (0E2):
971.044.232.C
971.044.232.D
 Sports exhaust system – Tailpipe in Silver chrome-plated look,
set
 Sports exhaust system – Tailpipe in Black chrome-plated look,
set
Parts list:
Figure 2
Jun 29, 2023
Page 2 of 21
Tequipment
Installation and Conversion Instructions
Panamera (971)
20/20
ENU
2601
2
955.111.108.30
2x
Clamp, ∅ 70 (front silencer/catalytic converter)  Figure 2 -1-
971.253.209.CK1
1x
Front silencer assembly (0E1) Figure 2 -2-
971.253.209.CL1
1x
Front silencer assembly (0E2, not shown)
958.111.220.10
2x
N .910.793.01
10 x
971.253.607.AY
1x
Clamping sleeve, ∅ 65 x 88 (front silencer/rear silencer) 
Figure 2 -3Hexagon-head bolt, M8 x 16 (exhaust system and connecting
strut)  Figure 2 -4Rear silencer ASSY, left  Figure 2 -5-
971.253.608.AY
1x
Rear silencer ASSY, right  Figure 2 -6-
N .903.425.02
4x
Speed nut, M6 x 19.5 x 18 – VW602 49  Figure 2 -7-
999.073.594.01
4x
Lens-head screw, M6 x 12 PA  Figure 2 -8-
— — —1
1x
Sports tailpipe, silver chrome-plated, outer left  Figure 2 -9-
— — —1
1x
Sports tailpipe, silver chrome-plated, inner left  Figure 2 -10-
— — —1
1x
Sports tailpipe, silver chrome-plated, inner right  Figure 2 -11-
— — —1
1x
Sports tailpipe, silver chrome-plated, outer right  Figure 2 -12-
— — —1
1x
Sports tailpipe, black chrome-plated, outer left (not shown)
— — —1
1x
Sports tailpipe, black chrome-plated, inner left (not shown)
— — —1
1x
Sports tailpipe, black chrome-plated, inner right (not shown)
— — —1
1x
Sports tailpipe, black chrome-plated, outer right (not shown)
971.907.159.AT
1x
Engine noise control unit  Figure 2 -13-
4H0.907.601.E
1x
Engine noise pulse sender  Figure 2 -14-
N.908.877.03
3x
M6 hexagon nut, self-locking  Figure 2 -15-
971.044.211
1x
999.513.052.40
15 x
Wire harness assembly for engine noise control unit/pulse sender
– Left-hand drive (LHD) vehicle  Figure 2 -16Tie-wrap, 4.8 x 188 (not shown)
999.650.398.12
3x
Cable shoe (ring eyelet), A6-1 (not shown)
1
ONLY contained in respective set.
Information
ONLY in the event of repairs/replacement:
Items WITHOUT a part number in the parts list can be found/ordered from the Porsche Electronic Parts
Catalog = PET.
Check model year and vehicle equipment (I-no.) in the standard catalog!
Material:
000.043.172.00
1x
Sealing cord
———
1x
Commercially available rust solvent, e.g. WD40
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601
Tool:
ENU
Installation and Conversion Instructions
20/20
———
1x
Wrapping tape (commercially available)
———
2x
Auxiliary line (Tecalan or Teflon hose) approx. 1,500 mm long
P90999 - P90999 - PIWIS Tester 4
Nr.166 - Chain-type pipe cutters
Nr.166-1 - Ratchet-type pipe cutters
Nr.90 Pos.1 - Torque wrench
Nr.155 Pos.1 - Set of press-out tools
VAS 6931 Transmission and gearbox jack
VAS 5908 Battery Charger, 90 A
VAS 6780 Body saw
VAS 1978/1A Crimping pliers
Assembly:
1
Preparatory work
1.1
Drive the vehicle onto a lifting platform.  Workshop Manual '4X00IN Raising the vehicle'
1.2
Connect battery charger 90A.  Workshop Manual '2X00IN Battery trickle charge'
1.3
Remove cowl panel cover.  Workshop Manual '508719 Removing and installing cowl panel
cover'
1.4
Remove wiper motor with linkage.  Workshop Manual '921919 Removing and installing
wiper link'
1.5
Removing cover under dashboard. 
Workshop Manual '702219 Removing and
installing cover under dashboard'
1
2
3
1.6
Jun 29, 2023
Page 4 of 21
– Dashboard cover
– Inner door sill trim (front)
– Diagnostic socket
1.5.1
Left-hand drive: ONLY left side (
Figure 5 -1-)
1.5.2
Right-hand drive: ONLY right side
Remove (front) inner door sill trim. 
Workshop Manual '680519 Removing and
installing inner (front) door sill trim'
1.6.1
Left-hand drive: ONLY left side ( Figure 5 -2-)
1.6.2
Right-hand drive: ONLY right side
Tequipment
Figure 5
Installation and Conversion Instructions
1.7
2
Panamera (971)
20/20
ENU
2601
2
Remove diagnostic socket (under dashboard
 Figure 6).
1.7.1
Press locking lugs (4 x) on diagnostic socket at the same time (
Figure 6 -A-).
1.7.2
Pull diagnostic socket forward out
of the dashboard retaining frame
and remove it ( Figure 6 -B-).
Install engine noise control unit and pulse sender
Figure 6
– Installation positions on LHD vehicle ( Figure 7
-A-)
A
B
1
2
2.1
–
–
–
–
Left-hand drive
Right-hand drive
Engine noise pulse sender
Engine noise control unit
Position engine noise control unit on M6 studs
(2 x) in the plenum panel and secure with two
M6 hexagon nuts (2 x) ( Figure 7).
Tightening torque 5 Nm (3.7 ftlb.)
+/-0.75 Nm (0.6 ftlb.)
2.2
Figure 7
Guide pin on underside of engine noise pulse sender into the bore on the holder in the plenum
panel. Secure engine noise pulse sender, facing the windscreen, with an M6 hexagon nut
(1 x) in the plenum panel holder ( Figure 7).
Tightening torque 5 Nm (3.7 ftlb.) +/-0.75 Nm (0.6 ftlb.)
NOTICE
Incorrect line routing
•
Risk of damage to lines and hoses
•
Malfunction and fault memory entry on control unit

Avoid small bending radii when routing lines.

File down edges and burrs in the routing area or mask them with adhesive tape.
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601

ENU
Installation and Conversion Instructions
20/20
Maintain a sufficient distance from components exposed to high temperatures while driving.
2.3
Route electric wire harness in the plenum panel to the passenger compartment.
Electric wire harness connections ( Figure
8):
1
2
3
4
5
– Engine noise pulse sender
connector (2-pin)
– Engine noise control unit connector
(6-pin)
– Cable shoe (ring eyelet), A6 (ground)
– Double connector lines (power
supply)
– 2-pin connector (CAN bus)
Figure 8
2.3.1
Connect electric plug connections
for engine noise pulse sender
(2-pin) and for engine noise control
unit (6-pin) ( Figure 9).
1
2
3
4
A
B
– Engine noise pulse sender
– Pulse sender holder
– Line for engine noise pulse
sender
– Engine noise control unit
– incorrect line routing
– correct line routing
Information
Check that the electric line for the
plug connection for the engine
noise pulse sender is routed
correctly.
•
Jun 29, 2023
Page 6 of 21
Figure 9
The line must NOT be touching the engine noise pulse sender holder (on the
body side)!
Tequipment
Installation and Conversion Instructions
•
2.3.2
Panamera (971)
20/20
ENU
2601
2
Route the line differently if necessary and use a tie-wrap to secure the line
to existing lines or holders without tensile stress and so that no chafing or
rattling occurs.
Route electric wire harness as follows to the passenger compartment:
Left-hand drive ( Figure 10):
1
2
3
4
5
6
–
–
–
–
–
–
Pulse sender
Control unit
Electric wire harness
Dome strut
Brake booster
Grommet on bulkhead (left
side)
Pulse sender → control unit →
above dome strut (along wire
harness) → underneath brake
booster → grommet on bulkhead
(left side)
Figure 10
Right-hand drive ( Figure 11):
1
2
3
4
5
6
– Pulse sender
– Control unit
– Routing of electric wire
harness
– Dome strut
– Brake booster
– Grommet on bulkhead
(right side)
Plug connection for engine
noise pulse sender → along wire
harness above dome strut → plug
connection for engine noise control
unit → underneath brake booster →
grommet on bulkhead (right side)
Figure 11
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601
ENU
Installation and Conversion Instructions
20/20
2.3.3
Remove grommet on bulkhead (LHD
vehicle: left side  Figure 12).
1
2
3
– Grommet on bulkhead (left
side)
– Electric wire harness
– Brake booster
Figure 12
2.3.4
Remove pin contact (2 x) from
connector housing for CAN bus
(2-pin) electric wire harness:
1
2
•
•
•
•
Jun 29, 2023
Page 8 of 21
– Chamber 1
– Chamber 2
Release (2-pin) connector
housing for CAN bus ( Figure
13 -A and B-).
Press lightly on retaining
spring on the pin contact (
Figure 13 -C-) and pull line
with pin contact out of the
connector housing slightly at
the same time ( Figure 13
-D-).
You may have to do this a
second time because of the
housing bar ( Figure 13 -E
and F-).
Repeat Steps A to F on the second pin contact.
Figure 13
2.3.5
Wind wrapping tape around both pin contacts.
2.3.6
Cut off cable shoe (ring eyelet) A6 on BN 0.5² line (ground) if necessary. Carefully
guide electric wire harness through the grommet.
Tequipment
Panamera (971)
Installation and Conversion Instructions
2.3.7
•
•
2.4
2601
2
– Grommet
– Sealing cord
– Electric wire harness
Install pin contact (2 x) in connector
housing for CAN bus (2-pin):
•
2.3.9
ENU
Install grommet in bulkhead and
seal inside and outside ( Figure
14) with sealing cord.
1
2
3
2.3.8
20/20
Connect CAN drive LOW /
OG/BN / 0.35² line in chamber
Figure 14
1.
Connect CAN drive HIGH / OG/BU / 0.35² line in chamber 2.
Lock (2-pin) connector housing.
Crimp new cable shoe (ring eyelet) A6 on BN 0.5² line (ground) if necessary.
Route and connect electric wire harness in the passenger compartment.
– Line routing on LHD vehicle ( Figure 15):
1
2
3
– Ground pin for left A-pillar
– Diagnostic socket
– 2-pin connector
Figure 15
Function / line:
Connection point - LHD vehicle
Weight
Terminal 31 = BN; 0.5²
Ground pin for left A-pillar (MB11, 639.1)
Power supply
Terminal 15 = BK; 0.5²
Diagnostic socket, double connector on line 112
(chamber 1, terminal 15 = RD/YE; 0.5²)
Control
CAN drive LOW =
OG/BN; 0.35²
2-pin connector, chamber 1 (connection point
underneath dashboard – left side)
Control
CAN drive HIGH =
OG/BU; 0.35²
2-pin connector, chamber 2 (connection point
underneath dashboard – left side)
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601
ENU
Installation and Conversion Instructions
20/20
2.4.1
BN 0.5² line (ground)
1
2
•
•
– BN 0.5² line
– Ground pin (LHD)
Route BN 0.5² line (ground) to
the ground pin of the relevant
A-pillar.
Install cable shoe (ring eyelet)
A6 on the ground pin ( Figure
17)
Tightening torque 9 Nm (6.6
ftlb.)
2.4.2
BK 0.5² line (power supply)
1
2
3
4
5
•
•
•
•
•
•
•
•
2.4.3
Jun 29, 2023
Page 10 of 21
Figure 17
–
–
–
–
–
Diagnostic socket
Line 112 RD/YE; 0.5²
Socket
BK 0.5² line
Crimp connector
Route BK 0.5² line to the diagnostic socket.
Cut off one BK 0.5² line at the
Y-splice and seal with shrink-fit
hose.
Release diagnostic socket and
remove line 112 RD/YE 0.5²
from chamber 1 ( Figure 18
-top-).
Remove insulation on line 112
RD/YE 0.5² approx. 2 cm from
Figure 18
the socket.
Crimp BK 0.5² line to line 112 RD/YE 0.5² in the insulated area using a crimp
connector ( Figure 18 -bottom-).
Slide shrink-fit hose over line 112 RD/YE 0.5² and seal crimp connection.
Install socket in chamber 1 of the diagnostic socket and lock diagnostic
socket.
Install diagnostic socket under the dashboard.
Connector (2-pin, with OG/BN and OG/BU line) for CAN bus
Tequipment
Installation and Conversion Instructions
Panamera (971)
20/20
ENU
2601
2
– Connection point in LHD vehicle
( Figure 19):
1
2
3
4
–
–
–
–
Socket (2-pin)
Steering column
Wiring duct
Plug connection (2-pin)
Work on LHD vehicles:
•
•
•
Expose (2-pin) socket
underneath the dashboard
(LHD: in steering column area
 Figure 18.
Route OG/BN and OG/BU lines
with (2-pin) connector to (2-pin)
socket.
Connect (2-pin) plug
connection ( Figure 19 -4and  -4-).
Figure 19
NOTICE
Incorrect line routing
•
Risk of damage to lines and hoses
•
Malfunction and fault memory entry on control unit

Avoid small bending radii when routing lines.

File down edges and burrs in the routing area or mask them with adhesive tape.

Maintain a sufficient distance from components exposed to high temperatures while
driving.
2.4.4
2.5
Secure electric wire harness in the passenger compartment to existing
lines/components with tie-wraps without tensile stress and so that no chafing
occurs.
Concluding work – electrics
2.5.1
Install (front) inner door sill trim.  Workshop Manual '680519 Removing and
installing inner (front) door sill trim'
2.5.2
Install the cover under the dashboard.  Workshop Manual '702219 Removing
and installing cover under dashboard'
2.5.3
Install wiper motor with linkage.  Workshop Manual '921919 Removing and
installing wiper link'
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601
ENU
Installation and Conversion Instructions
20/20
2.5.4
Install cowl panel cover.  Workshop Manual '508719 Removing and installing
cowl panel cover'
CAUTION
Hot components
•
Risk of burns

Let hot components cool down.

Wear personal protective gear.
3
Installing new exhaust system
3.1
Remove standard front silencer
3.1.1
Remove tunnel cover on –center–
underbody ( Figure 21 -1-) and
detach center underbody cover at
the left/right side.  Workshop
Manual '519319 Removing
and installing cover for central
underbody cover'
1
2
Jun 29, 2023
Page 12 of 21
– Tunnel cover on –center–
underbody
– Tunnel strut
3.1.2
Remove tunnel strut (10 x
hexagon-head bolts, M10 x 45 
Figure 21 -2-).  Workshop Manual
'260119 Removing and installing
exhaust system'
3.1.3
Engine and gearbox jack must
Figure 21
be positioned under the front
silencer. Then secure the front silencer with belts to prevent it from falling down.
Tequipment
Installation and Conversion Instructions
3.1.4
Panamera (971)
20/20
ENU
2601
2
Cut rear silencer at the connection
point for the front silencer (marking
on underside) using pipe cutters or
body saw ( Figure 22).
1
2
3
4
–
–
–
–
Installation position of strut
Disconnection point
Body saw
Multiple-tooth countersunk
screw, M8 x 20 (rear-end
cross strut)
3.1.5
Loosen clamp (2 x) between front
silencer and catalytic converter
decoupling element (left/right).
3.1.6
Secure decoupling element
(left/right) to the transmission
support with a tie-wrap/wire to
prevent it from folding down
( Figure 23).
1
2
3
Figure 22
– Decoupling element
(left/right)
– Tie-wrap/wire
– Transmission support
3.1.7
Remove hexagon-head bolt (M8 x
16; 2 x) on the front holder (transmission bridge) and hexagon-head
bolt (M8 x 16; 4 x) on –center– front
silencer assembly mount
3.1.8
Remove front silencer assembly by
pulling it downwards.
Tequipment
Figure 23
Jun 29, 2023
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2
Panamera (971)
2601
ENU
Installation and Conversion Instructions
20/20
3.2
Remove standard tailpipes ( Figure 24
(Panamera Turbo)).  Workshop Manual
'263519 Removing and installing tailpipe
trim'
1
2
3
3.3
– Standard tailpipes – right-hand side
– Lens-head screw, M6 x 12
– Speed nut, M6 x 19.5 x 18 – VW602
49
Remove standard rear silencers. 
Workshop Manual '263319 Removing and
installing rear silencer'
3.3.1
Remove rear underbody cover. 
Workshop Manual '519419 Remove
and install cover for rear underbody'
Figure 24 (Panamera Turbo)
3.3.2
Remove hexagon-head bolt M8 x
16 (2 x) on strut between the rear
silencers ( Figure 25 -1-) and
remove strut.
1
2
3
4
3.4
Jun 29, 2023
Page 14 of 21
–
–
–
–
Installation position of strut
Disconnection point
Body saw
Multiple-tooth countersunk
screw, M8 x 20 (rear-end
cross strut)
3.3.3
Release and disconnect plug
connection for exhaust flap
actuator (rear silencer at the left/right).
3.3.4
Remove hexagon-head bolts M8 x 20 (2 x) on rear-end cross strut ( Figure 25
-4-).  Workshop Manual '421319 Removing and installing rear-axle chassis
subframe struts'
3.3.5
Remove hexagon-head bolt M8 x 16 on rear silencer holder at the rear (left/right).
3.3.6
Remove rear silencers (at the left/right).
Figure 25
Install new rear silencers (left/right).  Workshop Manual '263319 Removing and installing
rear silencer'
Tequipment
Installation and Conversion Instructions
3.4.1
20/20
ENU
2601
2
Install new speed nut M6 x 19.5 x
18 – VW602 49 (2 x) on holders on
exhaust pipes of new rear silencers
(left/right  Figure 26).
1
2
3.4.2
Panamera (971)
– Speed nut, M6 x 19.5 x 18
– VW602 49
– Holder on rear silencer
exhaust pipes (right)
Lift new rear silencers (left/right)
into installation position and secure
to the body using a hexagon-head
bolt M8 x 16 (1 x).
Figure 26
Tightening torque 23 Nm (17 ftlb.)
3.5
3.4.3
Connect plug connection for exhaust flap actuator (rear silencer at the left/right).
3.4.4
Install new clamping sleeve, ∅ 65 x 88 (2 x) on inlet pipe for rear silencer (at the
left/right).
Install new front silencer.  Workshop Manual '260119 Removing and installing exhaust
system'
3.5.1
Position new clamp, ∅ 70 (2 x) on catalytic converter decoupling element (at the
left/right).
3.5.2
Secure new front silencer on engine and gearbox jack with belts and move it into
installation position.
3.5.3
Remove securing aids from catalytic converter decoupling element (at the
left/right). Loosely pre-fit catalytic converter decoupling element on the front
silencer using a new clamp, ∅ 70 (2 x).
3.5.4
Align clamping sleeve ∅ 65 x
88 (2 x) on exhaust pipe on front
silencer/rear silencer (at the
left/right) so that the clamping
sleeve is not touching/rubbing at
any point ( Figure 27).
1
2
– Clamping sleeve
– Hexagon nut M8
Loosely pre-fit clamping sleeve, ∅
65 x 88 (2 x).
3.5.5
Figure 27
Secure holder at front of front
silencer to transmission support using hexagon-head bolts, M8 x 16 (2 x).
Tightening torque 23 Nm (17 ftlb.)
Tequipment
Jun 29, 2023
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2
Panamera (971)
2601
ENU
Installation and Conversion Instructions
20/20
3.5.6
Secure clamp, ∅ 70 (2 x) on catalytic converter decoupling element (at the
left/right).
Tightening torque 35 Nm (25.8 ftlb.)
3.5.7
Secure –center– front silencer mount to the body using hexagon-head bolts, M8 x
16 (4 x).
Tightening torque 23 Nm (17 ftlb.)
3.5.8
Secure clamping sleeve (∅ 65 x 88, 2 x) on the front silencer/rear silencer (at the
left/right).
Tightening torque 33 Nm (24.3 ftlb.)
3.5.9
Tighten multiple-tooth countersunk screws M8 x 20 (2 x) on rear-end cross strut.
 Workshop Manual '421319 Removing and installing rear-axle chassis subframe
struts'
Tightening torque 20 Nm (14.8 ftlb.)
3.5.10
3.6
Loosely pre-fit strut between the rear silencers using hexagon-head bolts M8 x 16
(2 x).
Install Sports tailpipe
3.6.1
Slide the new sports tailpipes onto the relevant rear silencer stub pipes as far as
the screw point and preassemble by installing a new M6 x 12 lens-head screw
hand-tight.
Information
Jun 29, 2023
Page 16 of 21
Tequipment
Installation and Conversion Instructions
Panamera (971)
20/20
ENU
2601
2
If the sports tailpipes have to be moved to the right or left, this can only be
performed via the connecting strut between the rear mufflers (see also: 
Workshop Manual '263319 Removing and installing rear muffler').
3.6.2
Check that the gap = ‘dimension Z’
between the new sports tailpipes
and exhaust system cover (rear
bumper – left and right side
of vehicle  Figure 28 -Z-) is
symmetrically constant.
Dimension Z – symmetrical,
constant all the way
around with respect to
exhaust system cover
Dimension X – equal projection
(right side of vehicle)
Re-align sports tailpipes if
necessary.
Information
The tailpipes are adjusted in X
direction using the slots in the
tailpipe.
3.6.3
Figure 28
Check that the sports tailpipes have equal projection = “dimension X” with respect
to the rear body panel (left and right side of vehicle  Figure 28 -X-).
Re-align sports tailpipes if necessary.
3.6.4
Tighten lens-head screw, M6 x 12 on sports tailpipe cover.
Tightening torque 8 Nm (5.9 ftlb.) +/-1 Nm (0.7 ftlb.)
3.6.5
Tighten hexagon-head bolt (M8 x 16, 2 x) on strut between the rear silencers.
Tightening torque 23 Nm (17 ftlb.)
Coding:
4
3.7
Install rear underbody cover.  Workshop Manual '519419 Removing and installing cover
for rear underbody'
3.8
Secure center underbody cover at the left/right side and install tunnel cover on –center–
underbody.  Workshop Manual '519319 Removing and installing cover for central
underbody cover'
Entering the sports exhaust system (0P8 or 0P9) in the vehicle data
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NOTICE
Voltage drop
•
Risk of irreparable damage to control unit
•
Risk of damage to control unit
•
Fault entries in the control unit
•
Coding in the control unit is aborted
•
Malfunctions in control unit, even during programming

Switch off the ignition and remove the ignition key before disconnecting the control unit.

Ensure that the power supply is not interrupted during programming.

Connect a battery charger with a current rating of at least Nominal value 90 A to the vehicle
battery.
4.1
Preliminary work – Coding
NOTICE
Control unit programming will be aborted if the Internet connection is unstable.
•
An unstable Internet connection can interrupt communication between PIWIS Tester
4 and the vehicle communication module (VCI). As a result, control unit programming
may be aborted.

During control unit programming, always connect PIWIS Tester 4 to the vehicle
communication module (VCI) via the USB cable.
4.1.1
P90999 - P90999 - PIWIS Tester 4 to the vehicle and switch it on.
4.1.2
Switch on ignition AND hazard warning lights on the vehicle.
Information
The P90999 - PIWIS Tester 4 instructions take precedence since the description
may be different with later Tester releases.
The procedure described here has been structured in general terms; different text
or additions may appear on the P90999 - PIWIS Tester 4.
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4.1.3
In the PIWIS Tester, select “Diagnostics” from menu.
4.1.4
If the P90999 - P90999 - PIWIS Tester 4 is connected correctly, a connection to
the vehicle is established: “971 model line” is detected.
4.1.5
Create a vehicle analysis log (VAL) in the “Overview” menu item.
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Information
The function is ONLY available when the Tester is online!
4.2
Enter the new vehicle equipment in the vehicle data using “PIWIS Online”
4.2.1
Select the function “Maintenance of vehicle data with PIWIS ONLINE” in the “Model
line-specific tests and campaigns” menu item.
A message appears informing you that the “Actual” (vehicle) data and “Required”
(PIWIS Online) data will be compared.
Press •F12“ to continue.
4.2.2
Confirm the message “The vehicle data was compared with PIWIS Online.
Significant differences were found” with •F12“.
4.2.3
Look for the option “INTERIOR SOUND MEASURES (VW SILENCERS)” in the
“Family” column.
Select the option “2HB – INTERIOR SOUND MEASURES (SHAKER)” from the
drop-down menu in the “Value” column. Press •F12“ to continue.
4.2.4
Look for the option “EXHAUST TAILPIPE” in the “Family” column.
Select the required option “0P8 – SPORTS EXHAUST SYSTEM – STAINLESS-STEEL
TAILPIPES” or “0P9 – SPORTS EXHAUST SYSTEM – BLACK TAILPIPES” from the
drop-down menu in the “Value” column. Press •F12“ to continue
4.2.5
A table containing the coding value and the columns “new value” and “old value” is
displayed in the overview. Press •F8“ to continue.
4.2.6
Data is then written / stored. The following messages appear one after the other:
•
•
•
•
4.2.7
5
Transferring vehicle data to PIWIS Online.
Writing and transferring vehicle data to the vehicle.
Vehicle order was written successfully.
A check was performed in order to check whether control units have to be
coded or programmed as a result of the changes that were made.
Press •F10“ to open the log. Check that the selected vehicle equipment has been
entered and close the log.
Code / program the new vehicle equipment.
5.1
Code / program the new vehicle equipment.
5.1.1
Confirm the table containing a list of control units that must be
coded/programmed, by pressing •F12“.
5.1.2
Individual data records will be loaded, depending on the number of control units to
be coded/programmed.
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Wait until messages “Creating backup documentation. Please wait … and “Coding
was completed successfully.” appear. Press •F12“ to continue.
Repeat the process for other control units if necessary.
5.1.3
Wait for the “Adaptation of the control units is complete.” message and check the
coding status of the control units in the table displayed.
Continue by pressing •F12“ to return to the control unit overview.
5.2
6
Read out the fault memory of all systems, work through any existing faults and erase the fault
memory.  Workshop Manual '0X03IN Diagnostics maintenance: Diagnostic system and
maintenance inter...'
Function tests
6.1
Perform function test on engine noise pulse sender
6.1.1
Look for and select “Control unit for interior acoustics” in the control unit overview.
Then select the “Drive links/checks” tab
6.1.2
Then select “Sound symposer activation”. Press •F12“ to continue.
6.1.3
Press •F8“ to execute function test. If the test is successful, the following information will be displayed:
•
•
Results column: “Successful output without return value”
Value column: “active”.
You will also hear an increasing acoustic signal.
6.1.4
6.2
Go back to the control unit overview by pressing •F11“
Perform “Sports exhaust system” function test
6.2.1
Start engine.
6.2.2
Switch the sports exhaust system on and off using the Porsche Communication
Management system (PCM). To do this, select the menu “Car”, then “Drive” and
then “Sports exhaust system”.
6.2.3
The ACTIVE sports exhaust system is displayed with orange tailpipes for a period
of 20 seconds in the vehicle silhouette.
Then, an ACTIVE sports exhaust system can be identified by the red line under the
“Twin tailpipe” symbol (sports exhaust system control panel) on the PCM touchscreen.
6.2.4
6.3
“Driving modes” and “Sports exhaust system” function test
6.3.1
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You must hear a change in the noise level.
Select various “driving modes”: SPORT, SPORT PLUS, INDIVIDUAL or
NORMAL/HYBRID.
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6.4
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Check that the display in the PCM and the behavior of the sports exhaust system
are as described under “Driving modes” and “Sports exhaust system” in the
Driver’s Manual.
Switch off ignition, disconnect P90999 - P90999 - PIWIS Tester 4.
–Retrofitting sports exhaust system (1 x)–
Includes:
Install pulse sender and engine noise control unit;
Route and connect electric wire harness;
Replace front silencer, rear silencer and align new sports
tailpipes (4 x) with the rear bumper;
Code sports exhaust system and perform function test;
Read out error memory, remedy and erase errors.
Labor time: 428 TU
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
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