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Race plenum and throttle body. Porsche 997 Turbo 07-09 ❭ AP-997TT-105
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13

Fits:
Porsche 997 Turbo 2007-09
Adding bolt-on horsepower to the 997 Turbo is a continuous quest by many enthusiasts looking for more power. Reverting back to old tuning technologies, Agency Power has developed a larger throttle body and plenum kit for the Porsche 997 Turbo to gain added performance. The point of a larger throttle body is to get in more air.
The more air you bring in, the more power you make. The 997 Turbo's engine intake system works off pulses, so how that air is diverted to either side of the engine is not as important as the volume incoming. The plenum kit includes an OEM Porsche Cayenne Turbo throttle body (part# 94860511503) which is a direct bolt on and plug in for the electronic throttle control with no modifications needed.
This throttle body has a 77.64mm inner diameter compared to the stock one of 75.64mm. We chose to go with this smaller diameter throttle body to give the car more low end horsepower and torque. If the diameter of the throttle body is to big, it will increase turbo lag and performance gains will only be made at the mid to top end RPM range. Since most 997 Turbo users drive their car on the street and track, we developed this product to substantially increase throttle response and improve "usable" power.
The Agency Power plenum kit is made using high quality 6061 aluminum that has been TIG welded and pressure tested in a T shape to mimic the OEM design. The CNC machined 4 bolt throttle body flange features a groove to accompany a rubber o-ring to ensure a secure and sealed fit with the OEM Porsche Cayenne throttle body. The T plenum features the necessary fittings for stock vacuum hoses and breather lines and includes a 1 way check valve needed. Each T plenum is powder coated gloss black for an OEM look and includes new silicone couplers in black and worm clamps to secure it to the factory intake manifolds. The installation of the plenum requires removal of the factory airbox and Y pipe to access the component.
Installation of the Agency Power plenum kit DOES NOT require the ECU to be flashed. The factory ECU will adjust accordingly to the change in throttle body diameter. However, corresponding mods including an ECU flash will only bring out additional power. As it stands alone, the plenum kit will add a bolt on 20 wheel horsepower to your Porsche 997 Turbo. As tested on a VR700 kit, the plenum added nearly 45 horsepower and 60 ft/lbs of torque. Splitting and diverting the air flow and directing it towards the cylinders at a much higher air speed.
Recommended installation time is approximately 3 hours.
HP Gains: 40-45Bhp. 60 ft/lbs of torque
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
AP-997TT-105
The product you are viewing cross references to these numbers
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005

The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
The 996 3.6L X51 package was typically found on the "40th Anniversary" limited edition cars (MY 2004) but could also be special ordered by performance minded customers. The X51 engine package increased horsepower from the standard 316 up to 345.
The X51 Carrera's came equipped with a variety performance upgrades, both internally and externally, that made the cars very desirable for Porsche drivers looking for something closer to the GT3 experience.
The X51 engine package was blessed with many wonderful internal performance upgrades but Porsche still utilized the factory air distributor opening the door for the IPD Plenum to provide even more additional power.
The 996 X51 IPD Plenum is designed to use all the pre-existing factory hardware and OE 74mm throttle body. The revolutionary design of the IPD "Y" style Intake Plenum increase horsepower by 24 and torque by 22 (at the wheels).
The X51 Plenum is a direct bolt on replacement and installation is relatively straight forward for mechanically inclined DIY customers although IPD strongly recommends all Plenum installations be performed by a trained and qualified Porsche technician.
Fits:
Porsche 996 X51 Upgrade cars 3.6L
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96174-X
The product you are viewing cross references to these numbers
- 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 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Fits:
Porsche Porsche 996 Carrera C2 3.6L
Porsche Porsche 996 Carrera C4 3.6L
Porsche Porsche 996 Carrera C2 3.4L*
Porsche Porsche 996 Carrera C4 3.4L*
(*FOR CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY CABLE THROTTLE CARS)
Fits:
Porsche 997 GEN1 3.6L
Porsche 997 GEN1 3.8L S
The 996 did not mark the beginning of a new Porsche chapter, it marked the beginning of a new Porsche book. The prolific 911 was baptized and emerged water cooled, leaving the legendary air cooled engine to live in Porsche history.
The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
Just like the Carrera S, it's difficult to find power for the naturally aspirated 3.4L Carrera, but the IPD Plenum does it better than any other after market mod available. This simple bolt on performance upgrade replaces the factory plastic air distributor with the IPD patented aluminum "Y" style Plenum.
The IPD Plenum delivers impressive horsepower gains of 25 and torque gains of 22 by means of a superior and more efficient design. These gains are mainly felt in the mid range where it is most needed and most enjoyed but performance improvements are realized throughout the entire rev range. Impressive Performance improvements like this will truly transform your Porsche driving experience.
These added power gains in the mid range create a more liner power curve helping to minimizing the dip in power typically experienced in the factory curve resulting in considerable performance improvements.
The 996 Plenum installation is a direct bolt on R & R (remove and reinstall) procedure. Installation is relatively straight forward for mechanically inclined DIY customers although IPD strongly recommends all Plenum installations be performed by a trained and qualified Porsche technician.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97174
The product you are viewing cross references to these numbers
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 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 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- 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 / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16

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.
This is a 82mm Throttle body.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99760511601
The product you are viewing cross references to these numbers
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