Performance Plenum


- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)

As we all know, bigger is not always better when it comes to forced induction applications. The IPD Y-Pipe is considerably larger than the factory but not so large as to cause pressure drop within the intake tract resulting in turbo lag and reduced performance. This optimized "no-round" design with dimpled interior surface cannot be achieved with conventional round tube construction.
The 991 Turbo Y-Pipe is a direct bolt-on engine upgrade that requires no modifications but should be perform by an experienced Porsche technician familiar with the 991 platform. Y-Pipes comes with all the required hardware necessary to complete the installation.
Fits:
Porsche 991 Turbo /S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91500
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- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
IPD Aluminum Intake Plenum.
Porsche 991 Carrera DFI 3.4L
The new 991 Carrera is arguably one of the sexiest Porsches to come out of Stuttgart in recent years. But like most Carreras, power output is controlled to meet a "performance target" that satisfies the masses and not the dedicated Porsche driving enthusiasts. IPD is here to scratch that proverbial performance itch for those Porsche drivers looking to elevate the already visceral Porsche driving experience to the next level.
The engine in the new 991 remains relatively unchanged from the previous 997.2 Carrera. The 991 Carrera continues to employs the 82mm throttle body just like the Carrera before it. This means there is no "Competition Plenum" available since the 82mm TB is still the largest TB available from Porsche.
Performance gains remain at 14+ horsepower at the wheels. As with most IPD Plenums, the bulk of the power gains are realized in the mid-range where they are most used and enjoyed. Unlike other mods, the IPD Plenums deliver net power gains across the entire rev range.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91482-3.4
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- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)

Fits:
Porsche 991 Carrera S DFI 3.8L
Does not fit GTS model or 991.1 Carreras equipped with upgraded X51 engine package.
The new 991 Carrera is arguably one of the sexiest Porsches to come out of Stuttgart in recent years. But like most Carreras, power output is controlled to meet a "performance target" that satisfies the masses and not the dedicated Porsche driving enthusiasts. IPD is here to scratch that proverbial performance itch for those Porsche drivers looking to elevate the already visceral Porsche driving experience to the next level.
The engine in the new 991 remains relatively unchanged from the previous 997.2 Carrera. The 991 Carrera continues to employs the 82mm throttle body just like the Carrera before it. This means there is no "Competition Plenum" available since the 82mm TB is still the largest TB available from Porsche.
Performance gains remain at 15+ horsepower at the wheels. As with most IPD Plenums, the bulk of the power gains are realized in the mid-range where they are most used and enjoyed. Unlike other mods, the IPD Plenums deliver net power gains across the entire rev range.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91482-3.8
The product you are viewing cross references to these numbers





- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)

The new 991 IPD Turbo Plenum is nearly identical to the previous 997.2 Turbo Plenums. The new IPD Turbo Plenum is offered in one single 74mm version which utilizes the factory 74mm throttle body. The 991 Turbo intake manifolds are smaller than the 997.1 Turbo manifolds which is great for improved boost response and gas mileage but less than ideal for making substantial power gains. The 74mm TB provides more than adequate flow for these more restrictive intake runners eliminating the need for a larger 82mm "Competition" version.
The already explosive power of the 991 Turbo can be further increased with the new 991 Turbo IPD Intake Plenum. The patented IPD Plenum design works exceptionally well with all forced induction applications and the 991 Turbo is no exception. Power and torque increases provided by the IPD plenum are impressive and stay well above all factory power curves from launch to redline. Maximum power increases take place in the midrange where it's most needed, most critical and most enjoyed.
The 991 Turbo plenums deliver smooth and linear power with considerably quicker boost response creating a longer and more desirable power band. The Turbo plenums deliver reliable performance for both street and motorsport applications enhancing the already visceral Porsche Turbo driving experience.
The 991 Turbo requires an "adaptation" period that can be fully realized with either a series of hard pulls on the dyno or a series of spirited driving sessions, which of course IPD recommends only be performed on a closed course circuit. Installation of all Turbo Plenums is highly recommended to be performed by qualified and trained Porsche technicians.
Fits:
Porsche 991.1 Turbo
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
91274
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- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
- Porsche 991 Turbo Coupe 3.8L (540 Bhp)
- Porsche 991 Turbo S Coupe 3.8L (580 Bhp)
- Porsche 991 Turbo Cabriolet 3.8L (540 Bhp)
- Porsche 991 Turbo S Cabriolet 3.8L (580 Bhp)

To fit:
Porsche 991 Turbo and Turbo S from 2013 onwards
do88 are proud to present our newly developed Inlet Plenum for the Porsche 991 Turbo and Turbo S
With this high flow Plenum, the performance of your 991 will increase!
• do88 plenum is Y-shaped for improved air flow. • Our plenum flows 5,4% better compared with the OEM plenum (IPD aftermarket 2,1%) (see graph image)
• High quality casting pipe with CNC-machined connections
• Smooth internal surface for best air flow
• Comes with all necessary accessories for installation.
The OEM 991 Turbo plenum is T-shaped which means the air flow from the throttle body abruptly change direction when it´s divided to each side of the intake manifolds. It makes sense to design a plenum with a Y-shape instead of a "bank into the wall" flat T-shape. During the development process of this plenum we spent a lot of time with flow simulations of the internal Y-shape design. We made both flow simulations on our CAD system and real tests on our own SuperFlow SF-1020 flow bench using 3D-printed models.
To be able to manufacture this final design we choose to make a 3D freeform designed casting. This construction adds a lot of performance but not so much of extra weight. We designed the outside of the plenum to add as little weight as possible to the plenum.
do88 Performance Plenum weight 0,66 kg (1,46 lb) OEM plastic pipe weight 0,27 kg (0,60 lb) and competitor cast performance pipe (IPD) weight 1,13kg (2,49 lb)!
Be aware that the OEM parts were designed for the power level the car was built for originally. A power increase may cause your stock plenum to hold back the power of your engine. So even on an engine with a software tune only the do88 performance plenum will give a performance increase!
do88 performance plenum comes as a complete package with all parts necessary for installation.
Equivalent Porsche part numbers 9A111003770, 9A211003702, 9A211013702 (for cross reference only).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
TR-210-991
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- Porsche 991 Turbo 3.8L (520bhp)
- Porsche 991 Turbo S 3.8L (560Bhp)
- Porsche 991 Turbo Coupe 3.8L (540 Bhp)
- Porsche 991 Turbo S Coupe 3.8L (580 Bhp)
- Porsche 991 Turbo Cabriolet 3.8L (540 Bhp)
- Porsche 991 Turbo S Cabriolet 3.8L (580 Bhp)

To Fit:
Porsche 991 Turbo and Turbo S from 2013 onwards *** using the do88 TR-210-991 Inlet Plenum
Replacement O ring, required if you are disconnecting the inlet plenum whilst maintaining your car to provide a good seal and prevent air leaks.





- Porsche Boxster S 987 MKII 3.4L 2009-2012
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster S 981 3.4L 2012-16
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>
- Porsche 997 TURBO 2007>>
- Porsche 997 GT3 2007>>
- Porsche 997 MKII Carrera C2 3.6L 2009>>
- Porsche 997 MKII Carrera C4 3.6L 2009>>
- Porsche 997 MKII Carrera C2S 3.8L 2009>>
- Porsche 997 MKII Carrera C4S 3.8L 2009>>
- Porsche 997 MKII GT3 2010>>
- Porsche 991 Carrera C2 3.4L (350Bhp)
- Porsche 991 Carrera C2S 3.8L (400Bhp)
- Porsche 991 Carrera C4 3.4L (350Bhp)
- Porsche 991 Carrera C4S 3.8L (400Bhp)
- Porsche 991 R 4.0L (500 Bhp)
- Porsche 991 GT3 3.8L (475Bhp)
- Porsche 991 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp)
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayenne S/GTS 4.8L 2007>>
- Porsche Cayenne S V8 4.8L Petrol 400HP
- Porsche Cayenne GTS V8 4.8L Petrol 400HP
- Porsche Panamera S V8 4.8L
- Porsche Panamera 4S V8 4.8L
- Porsche Panamera GTS V8 4.8L
- Porsche Panamera GTS V8 4.8L 4WD (440Hp)

Fits:
Porsche 918 Spyder 2015 (requires 2 per engine)
Porsche 957 Cayenne GTS 4.8L (engine 48.01+)
Porsche 958 Cayenne S / GTS 4.8L (engine code 48.52)
Porsche 970 Panamera S/ GTS 4.8L (engine codes 48.20 / 48.40 / CXPA / CXRA / CXR)
Porsche 991.1 Carrera C2 / C2S / C4 / C4S
Porsche 997.2 Carrera C2 / C2S / C4 / C4S 3.6L & 3.8L engines
Porsche 997 GT3 3.8L 2007 >> (engines 97.76)
Porsche 997 GT3 3.8L & 4.0L 2009 >> (engines 97.74 / 97.77)
Porsche 997 GT3 3.8L 2007 >> (engines 97.76)
Porsche 991 GT3 / R 3.8L & 4.0L (engines A175 / DGG / DGA / DGGB)
Not for GT3 RS
Will also fit to many other Porsches fitted with oversized 82mm IPD plenums.
In fuel injected engines, the throttle body is the part of the air intake system that controls the amount of air flowing into the engine, in response to driver accelerator pedal input in the main. The throttle body is usually located between the air filter box and the intake manifold, and it is usually attached to, or near, the mass airflow sensor.
The largest piece inside the throttle body is the throttle plate, which is a butterfly valve that regulates the airflow. Have a larger diameter throttle body produces more air flow with equals more power. The upgrades should be used in conjunction with the competition plenums.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760511601
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