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How to Install PSE Control Unit (Porsche Type 997.2 / 987.2)

[Prologue]

First of all, let me explain to you why I needed to make this PSE Control Unit and decided to provide it as a Complete DIY Kit.

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

In May 2015, I imported the Porsche Sport Exhaust System (PSE) and tried to retrofit it to my Porsche 911 Carrea S (Type 997.2).

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

And I planned to control the PSE with the Combined Switch on the center console, as if it were a genuine Porsche option.

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

To realize this idea, I analyzed the internal connection of the Combined Switch and designed a small circuit.

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

Since it is an expensive car, reliability and durability are very important, so I made an original printed circuit board (PCB).

This PCB became the prototype of this PSE Control Unit.

Audi R8 Akrapovic Slip-On Line Titanium Exhaust System

In February 2019, I purchased the Akrapovic Slip-On Line Titanium Exhaust System and retrofitted it to my Audi R8 V10 5.2L quattro.

Exhaust Valve Controller for Audi and Porsche

Just as I made the circuit for Porsche, I designed the circuit for Audi that can control the Electromagnetic Valve from the driver's seat.

Exhaust Valve Controller for Audi and Porsche

To further increase reliability and durability, I designed the PCB in the same way as other mass-produced products.

Exhaust Valve Controller for Audi and Porsche

And I outsourced manufacturing of the PCB to a Japanese company, not cheap and shoddy Chinese. 0xF9F8

Exhaust Valve Controller for Audi and Porsche

This PCB is devised so that it can be selected between for Porsche and for Audi depending on the position of the solder jumper.

When I published this PSE Control Unit on my homepage, there were many requests from overseas Porsche owners, so I decided to provide it as a Complete DIY Kit.

I hope this Complete DIY Kit will be useful and pleased for overseas Porsche owners. 0xF995

How the PSE Control Unit works, see this video clip.

(This movie is the prototype version.)

[Confirmation of Contents]

When you receive the package that I send, check the contents.

How to Install the PSE Control Unit for Porsche

How to Install the PSE Control Unit for Porsche

(A)PSE Control Unit (Body)
(B-1)Wire Harness for Power Supply
(B-2)Wire Harness for Power Supply (with "Convenient Fuse")
(C)Wire Harness for Electromagnetic Valve (with Bosch Connector)
(D)Wire Harness for Combined Switch
(E)Connector Contact Pins
(F)Tie-Wraps, Heat Shrink Tubes, etc.

[Preparation of Tools]

Before the installation work, prepare some tools.

How to Install the PSE Control Unit for Porsche

On the left side is a Wire Stripper. Used to strip the coating of the wire. It is Hozan P-906 (New P-960).

On the right side is a Connector Crimping Pliers. Used to crimp the connector contact pins. These are ENGINEER PA-20 / PA-21.

Both tools are made by a Japanese company, not cheap and shoddy Chinese. 0xF9F8

How to use both tools, see this video clip.

How to Install the PSE Control Unit for Porsche

This is a Electronic Tester (Digital Multimeter). Used to search the power supply in the fuse box.

It is Sanwa PC710, it can transfer the measurement data to the PC by USB connection.

Of course, it is made by a Japanese company, not cheap and shoddy Chinese. 0xF9F8

PET fleece Sleeve, tesa 51608 and tesa 51036

On the left side is a Fleece Sleeve Tape for wire harness in the automotive passenger compartment. It is tesa Sleeve 51608.

On the right side is a Cloth Sleeve Tape for wire harness in the automotive engine compartment. It is tesa Sleeve 51036.

tesa is a German company whose products are often used in German cars such as Porsche, Audi, etc.

These are very useful for damping noise and protecting from abrasion.

[Wiring Diagram of PSE Control Unit]

Before the installation work, imagine the overall configuration of the wiring.

Wiring Diagram of the PSE Control Unit for Porsche

The wiring diagram of the PSE Control Unit is as above. It is not so difficult and complicated.

PinColorSymbolSignal Meaning
CN11RedIGNPower Supply (Ignition)
2BlackGNDGround (Earth)
3PurpleEV1Electromagnetic Valve +
4GreenEV2Electromagnetic Valve -
5-NCNot Contact (Only use for Audi)
CN21-NCNot Contact (Only use for Audi)
2-NCNot Contact (Only use for Audi)
3BlueSWSwitch Input (from Combined Switch)
4GrayLEDLED Input (from Combined Switch)

[Installation Work]

Now, let's start the installation work.

(i) Pull the EV Wire Harness and Fix the Control Unit

How to Install the PSE Control Unit for Porsche

This is a genuine Porsche Electromagnetic (Solenoid) Valve. (This position is a case of Type 997.2.)

How to Install the PSE Control Unit for Porsche

It controls the Butterfly Valve in the middle of the Exhaust Pipe, like this.

How to Install the PSE Control Unit for Porsche

Disconnect the genuine Porsche Waterproof Coupler (Connector) from the Electromagnetic Valve, and connect the Waterproof Coupler of the Wire Harness (C).

This Waterproof Coupler (and also genuine Porsche one) is Bosch OEM connector. So, it is easy to swap them.

How to Install the PSE Control Unit for Porsche

Remove the rear sear and the rear side lining.

How to Install the PSE Control Unit for Porsche

This is a Rubber Grommet on the bulkhead that separates the passenger compartment and the engine compartment.

There is a Service Hole at the Rubber Grommet.

How to Install the PSE Control Unit for Porsche

This is the Rubber Grommet seen from the engine compartment.

Make a small cross-shaped notch at the Service Hole using a cutter.

How to Install the PSE Control Unit for Porsche

Pull the Wire Harness (C) from the engine compartment through the notch.

How to Install the PSE Control Unit for Porsche

Fix the Wire Harness (C) along the body shape using a Sleeve Tape.

How to Install the PSE Control Unit for Porsche

At the base of the B-pillar, there is a genuine wire harness junction box.

From this junction box, fix the Wire Harness (C) along the genuine wire harness using a Sleeve Tape or Tie-Wraps.

How to Install the PSE Control Unit for Porsche

At the side sill, also fix the Wire Harness (C) along the genuine wire harness using a Sleeve Tape or Tie-Wraps.

How to Install the PSE Control Unit for Porsche

Pull the Wire Harness (C) to the base of the A-pillar. (This position is a case of right handle model.)

It is only a few meters, but it is been a long way, indeed. 0xF9C5

How to Install the PSE Control Unit for Porsche

Open the lid of the fuse box at the base of the A-pillar.

Search a position where the fuse is not inserted and the power supply can be taken out using a electronic tester.

It should become OFF when the engine is not running, and it should become ON when it is running. So, it is not a Battery Power, but is an Ignition Signal or an Accessory Signal.

How to Install the PSE Control Unit for Porsche

In a case of my 911 Carrera S (Type 997.2), the position is C-F1 (Red, 10A).

Insert the "Convenient Fuse" of the Wire Harness (B-2) to the position.

Pay attention to the insertion direction of the fuse. If it is inserted in the opposite direction, the power supply will pass through the fuse twice (10A and 3A).

Connect the spade terminal of the Wire Harness (B-1) to the earth point (GND).

How to Install the PSE Control Unit for Porsche

Fix the PSE Control Unit Body (A) to your favorite position using a double-sided adhesive tape.

(This photo is the prototype version. Now I do not own 911 Carrera S (Type 997.2). So, I have no photo of the product version.)

(ii) Pull the Switch Wire Harness and Terminate the Control Unit

How to Install the PSE Control Unit for Porsche

Remove the left and right side panels of the center console.

How to Install the PSE Control Unit for Porsche

The Combined Switch is fixed to the console frame with a metal spring. These are on both left and right sides.

How to Install the PSE Control Unit for Porsche

Push in the metal spring and pull out the Combined Switch.

How to Install the PSE Control Unit for Porsche

Remove the Combined Switch.

Pay attention not to scratch the Center Panel when pulling it out.

How to Install the PSE Control Unit for Porsche

This is a connector of the Combined Switch.

Cut a small Tie-Wrap using a cutter and slide the red connector cover to remove it.

How to Install the PSE Control Unit for Porsche

This is the inner part of the connector. There are 20 pins in total.

The pin number is written on the side of the connector.

How to Install the PSE Control Unit for Porsche

On the left side is the Contact Pins (E-1) for the wire harness of the Combined Switch.

It is made by TE Connectivity (former company name; AMP) whose products are often used in German cars such as Porsche, Audi, etc.

On the right side is the Contact Pins (E-2) for the wire harness of the PSE Control Unit.

It is made by JST (Japan Solderless Terminal).

There are four pins each, but only two pins are used. The other two pins are spares when you fail to crimp. 0xF9CE

How to Install the PSE Control Unit for Porsche

Crimp the Contact Pins (E-1) to Blue and Gray wire of the Wire Harness (D) using a Wire Stripper and a Connector Crimping Plier.

The Blue and Gray wire are 0.3sq (AWG22).

And crimp the Contact Pins (E-2) to Purple and Green wire of the Wire Harness (C).

The Purple and Green wire are 0.5sq (AWG20).

Before crimping the contact pins, adjust the length of the wire harnesses from the PSE Control Unit and from the Electromagnetic Valve.

If it is too long, cut it. But it needs a reasonable excess length for the termination.

How to Install the PSE Control Unit for Porsche

Insert the Blue wire to the Connector Slot A10 of the Combined Switch.

And insert the gray wire to the Connector Slot A11.

When insert the wire all the way, the contact pin makes a small clicking sound.

Do not make a mistake. If so, it will cause serious damage to the PSE Control Unit and the Combined Switch.

How to Install the PSE Control Unit for Porsche

Fix the Wire Harness (D) along the genuine wire harness using a Sleeve Tape or Tie-Wraps.

How to Install the PSE Control Unit for Porsche

Insert the Combined Switch to the console frame as before.

How to Install the PSE Control Unit for Porsche

Pull the Wire Harness (D) from the console frame.

How to Install the PSE Control Unit for Porsche

Insert the Purple wire of the Wire Harness (C) to the Connector Slot 3.

And insert the Green wire of the Wire Harness (C) to the Connector Slot 4.

(Even if you insert them in reverse, there is no problem. But do not insert them to the Connector Slot 5. It is used only for Audi.)

How to Install the PSE Control Unit for Porsche

Connent the Wire Harness (C) and the Wire Harness (D) to the PSE Control Unit Body (A).

(This photo is on the desk, but it is actually on the car.)

(Do not insert anything to the Connector Slot 1 and 2 of the Wire Harness (D). These are used only for Audi.)

How to Install the PSE Control Unit for Porsche

Fix the Wire Harness (C) and the Wire Harness (D) along the genuine wire harness, and terminate these wires with a reasonable excess length using a Sleeve Tape or Tie-Wraps.

How to Install the PSE Control Unit for Porsche

Fix the front side lining and close the lid of the fuse box as before.

(iii) Check the Operation of the Control Unit

Check if the PSE Control Unit is operating correctly.

How to Install the PSE Control Unit for Porsche

Before inserting the car key into the key cylinder, the Green LED Lamp in the center of the PSE Control Unit is OFF.

Insert the car key into the key cylinder, the Green LED Lamp should be ON.

It becomes the Accessory State, and the power is supplied to the PSE Control Unit.

(This photo is the prototype version. I have no photo of the product version. In the product version, there is no Orange LED Lamp.)

Exhaust Valve Controller for Audi and Porsche

(This photo is a case of my Audi R8 V10 5.2L quattro.)

How to Install the PSE Control Unit for Porsche

Turn the key once, the engine starts.

Push the PSE button of the Combined Switch. The Orange LED Lamp on the button lights up, and the sound notes of the exhaust should change.

Push the PSE button once more. The Orange LED Lamp goes out, and the sound of the exhaust should be quiet.

The button operates alternatively.

Then, turn the key off.

How to Install the PSE Control Unit for Porsche

Push the Blue Switch in the center of the PSE Control Unit, it is held in a low position. The PSE Control Unit becomes "Always-ON Mode".

Insert the car key into the key cylinder, the Orange LED Lamp will blink shortly to tell you that it is in "Always-ON Mode", like this.

Therefore, the PSE will be turned on before the engine starts.

Even it is in "Always-ON Mode", you can turn off the PSE at any time by pushing the PSE button.

The button also operates alternatively.

Congratulations! You made it! Enjoy the sound notes of the exhaust! 0xF9CF

Thanks, Arigato.

[Epilogue 1]

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

I installed the Original (One-Off) Straight X-Pipe instead of the genuine Porsche center exhaust.

Porsche 911 Type 997, PSE DIY, Porsche Sport Exhaust System

As you can see, the difference between a general X-Pipe and the Original Straight X-Pipe. The latter has less exhaust gas resistance.

About the Original Straight X-Pipe, refer this page. (Although it is written in Japanese.)

[Epilogue 2]

I am a businessman on weekdays, but I become a Sunday Engineer on weekends. 0xF995

Akihabara Technopolis Tokyo Japan

I procured many electronic devices in Akihabara, Technopolis Tokyo, Japan.

At night, it looks like the opening scene of "BLADE RUNNER", doesn't it? 0xF9F8

Akihabara Technopolis Tokyo Japan

This is one of the famous electronic device retailers in Akihabara.

It is in a multi-tenant building with some kind of suggestive store, Anime Otaku / Cosplay.

I am one of the serious and hard-working Japanese business people, so I will not enter such a store. 0xF9CD

Akihabara Technopolis Tokyo Japan

There are so many many devices in it.

Akihabara Technopolis Tokyo Japan

If you can not find the device there, you will not find it anywhere else.

When you come to Japan, visit Akihabara. You can experience the Japanese subculture. 0xF9CE

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