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DO88 Inlet Plenum (GT3 version 82mm). Porsche 997.1 Turbo 2007-2009 ❭ TR-150-GT3
- Porsche 997 MK1 TURBO 2007-09

To fit:
Porsche 997.1 Turbo models 2007-2009, using an upgrade GT3 82mm throttle body
DO88 are proud to present our newly developed Plenum for the Porsche 997.1 Turbos.
With this extreme high flow Plenum, the performance of your 997 generation 1 will increase! - The results of the final design were very impressive as the do88 Plenum totally outperformed the Porsche OEM Plenum by 34% increased flow when used in combination with a GT3 82mm throttle body at the same pressure drop!
• Available for OEM (74mm) and GT3 (82mm) throttle body
• do88 plenum is Y-shaped for improved air flow.
• High quality casting pipe with CNC-machined connections
• Smooth internal surface for best air flow
• Comes with all necessary accessories for installation
The OEM 997 Turbo plenum is T-shaped which means the air flow from the throttle body abruptly changes direction as it is divided to each side of the intake manifolds. It makes sense to design a plenum with a Y-shape instead of a "direct stop into the wall" 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 on 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 overall.
1. do88 Performance Plenum weight is 0,80 kg (1,76 lb) OEM plastic pipe weight 0,28 kg (0,62 lb) and a competitor's cast performance pipe weighed 1,19kg (2,63 lb).
2. The DO88 plenum flows 34% better for GT3 throttle body and 18% better for OEM throttle body compared with the OEM plenum (see diagram below).
The do88 Performance Plenum is straight bolt on when used with the 82mm OEM Porsche 997 GT3 throttle body, but you can also purchase this plenum together with a CNC-machined adaptor plate that allows you to install it with the oem 74mm OEM Porsche 997.1 Turbo throttle body.
Be aware of that the OEM parts were only 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 the do88 performance plenum will give a performance increase!
do88 performance plenum comes as a complete package with all parts necessary for installation.
When you order this kit, there is one choice that must be made:
Throttle body size: for OEM 74mm or GT3 82mm.
Please note, their is not any throttle body included in this kit.
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman S 3.4L 987C 2005-08
Porsche 987 GEN1 Cayman 2.7L / S 3.4L
Porsche 987 GEN1 Boxster 2.7L / S 3.4L
987 Competition Cayman 2.7L & 3.4L Plenum: HP Gains 20+ / Torque Gains 18 Requires upgrading factory 74mm Throttle Body with 997 GT3 82mm Throttle Body
Recommended to be installed on modified Caymans with Hi-Flow Cat back exhaust
Download the detailed installation instructions.
The perfectly balanced mid engine Cayman/Boxster is Germany's canyon carving track meister. Unfortunately, the Cayman/Boxster was delivered slightly under powered from the factory so as not to threaten the Carrera's thrown. The Cayman IPD intake plenum delivers increased performance that puts the Cayman/Boxster in the ring with the Carrera.
The IPD Plenum out performs every other intake system on the market. Don't be fooled by other competitors claiming to offer Plenums. All factory Porsche air distributors are of the "T" variety and therefore suffer from less than ideal air flow and intake air speed.
The genius and power behind the IPD plenums comes from the patented "Y" style design and optimized diversion areas to deliver real and impressive power that will transform your Cayman's/Boxster's performance and heighten your Porsche driving experience.
The Cayman/Boxster IPD Intake Plenums are available in 3 versions, each one specifically designed to meet the performance requirements of varying Cayman/Boxster enthusiasts. IPD offers the ultimate Cayman/Boxster performance upgrades, all the way from mild to wild.
The IPD Cayman/Boxster "Competition" Plenum was designed to meet the needs of the most demanding Cayman/Boxster S enthusiasts. The "Competition" Plenums is even larger and utilizes the 997 GT3 82mm throttle body allowing it to deliver even greater air flow and substantial increases in performance.
The "Competition" version is designed to work with both bone stock Caymans/Boxsters but produces even more horsepower gains (20+) with Caymans/Boxsters already equipped with after market "cat back" high flow performance exhaust and other performance mods.
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Some early models up to 2006 have a 68mm throttle body so you might need to buy a 74mm throttle body part code 99760511502

Fits:
Porsche 987 GEN1 Cayman S 3.4L
Porsche 987 GEN1 Boxster S 3.4L
Porsche 987 GEN1 Cayman 2.7L
Porsche 987 GEN1 Boxster 2.7L
Download the detailed installation instructions.
The perfectly balanced mid engine Cayman/Boxster is Germany's canyon carving track meister. Unfortunately, the Cayman/Boxster was delivered slightly under powered from the factory so as not to threaten the Carrera's thrown. The Cayman/Boxster IPD intake plenum delivers increased performance that puts the Cayman/Boxster in the ring with the Carrera.
The IPD Plenum out performs every other intake system on the market. Don't be fooled by other competitors claiming to offer Plenums. All factory Porsche air distributors are of the "T" variety and therefore suffer from less than ideal air flow and intake air speed.
The genius and power behind the IPD plenums comes from the patented "Y" style design and optimized diversion areas to deliver real and impressive power that will transform your Cayman's/Boxster's performance and heighten your Porsche driving experience.
The Cayman/Boxster IPD Intake Plenums are available in 3 versions, each one specifically designed to meet the performance requirements of varying Cayman/Boxster enthusiasts. IPD offers the ultimate Cayman/Boxster performance upgrades, all the way from mild to wild.
The 74mm Cayman/Boxster S Plenum utilizes the factory 74mm throttle body. This version provides impressive power gains throughout the entire power band, especially in the midrange where it's most critical and most enjoyed.
The 74mm Cayman/Boxster S Plenum application is recommended for Cayman/Boxster S enthusiasts looking for considerable performance gains without pushing the performance envelope. Max horsepower is 14 and max torque is 12 which all comes in around 5600 RPM. Power gains are realized throughout the entire power band without any loses in power.
The IPD Cayman/Boxster S Plenum will provides the most impressive power gains of any engine upgrade available and will truly transform your Cayman/Boxster driving experience. The 74mm IPD Plenum is the best Cayman/Boxster modification on the market and will further compliment other mods such as exhaust, software and beyond.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
87174-2.7
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
Fits:
Porsche 987 GEN1 Boxster S 3.2L 2005-06*
*Requires throttle body upgrade from 68mm to 74mm (part no 99760511501)
Download the detailed installation instructions.
The perfectly balanced mid engine platform of the 987 combined with a drop top convertible make for a truly liberating Porsche diving experience. The 987's were delivered slightly under powered from the factory so as not to rain on the Carrera's parade. The IPD Boxster intake plenum delivers increased performance that puts the Boxster in the ring with the famed Carrera.
The IPD Plenum out performs every other intake system on the market. Don't be fooled by other competitors claiming to offer Plenums. All factory Porsche air distributors are of the "T" variety and therefore suffer from less than ideal air flow and reduced intake air speed.
The Boxster IPD Intake Plenums are available in 3 versions, each one specifically designed to meet the performance requirements of varying Boxster enthusiasts. From mild to wild, it all depends on how fast you want the wind in your hair.
The genius and power behind the IPD plenums comes from the patented "Y" style design and optimized diversion areas to deliver real and impressive power that will transform your Boxster performance and heighten your Porsche driving experience.
Porsche introduced the 987 S Boxster with the 3.2 liter engine from the 986 Boxster S. This Plenum version provides impressive power gains throughout the entire power band, especially in the midrange where we enjoy it most.
The 74mm Boxster S IPD Plenum and upgraded 74mm (from 68mm) throttle body package is recommended for Boxster S enthusiasts looking for considerable performance gains. Performance gains can be felt throughout the entire power band making the Boxster driving experience even more visceral.
The IPD Boxster S Plenum will provides the most impressive power gains of any engine upgrade available and will truly transform your Boxster driving experience. The 74mm IPD Plenum is the best Boxster S modification on the market and will further compliment other mods such as exhaust, software and beyond.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
87174-3.2
The product you are viewing cross references to these numbers
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