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The 986 Boxster marked Porsche's return to a purpose built 2 seat roadster since the famed 550 Spyder. This liberating open cockpit platform was instrumental in saving Porsche from financial uncertainty and was Porsche highest volume seller from 1997 to 2003, until the Cayenne entered the Porsche line up.

The perfectly balanced mid engine 986 Boxster was designed to deliver driving excitement on sinuous back country roads while enabling the driver (and passenger) to literally take in the sights, sun and smells of the surrounding environment and listening to the intoxicating mechanical sounds of a flat 6 Boxer engine tones.

The Boxster experience can only be further heightened by adding improved performance. The IPD Plenums provide impressive the power gains throughout the entire power band making for an even more visceral Porsche driving experience.

All 986 Boxster IPD Plenum applications are designed to utilize the larger 74mm Porsche throttle body. The combination of the patented "Y" design of the IPD Plenum combined with a larger TB allow for improved air flow and intake air speed. The IPD Plenum is the absolute single best performance mod you can install on a Porsche Boxster.

IPD offers 2 different 986 Boxster plenum versions, each specifically suited to work with different model years and engine displacements.

Installation of the 986 Boxster IPD Plenums comes with additional hardware and is relatively straight forward although IPD strongly recommend installation be performed by a trained Porsche technician.

The 3.2 liter 986 Boxster S Plenum 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.

986 Boxster Competition 00-04 Plenum: TBA
Requires upgrading factory 68mm Thottle Body with 74mm Thottle Body

Fits:
Porsche 986 Boxster S 3.2L 2000-04

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 74mm Thottle body.