This Boxster S Plenum utilizes the factory 74mm throttle body. It provides impressive power gains throughout the entire power band, especially in the midrange where it's most critical and most enjoyed.
 
The 74mm Boxster S Plenum application is recommended for Boxster S enthusiasts looking for considerable performance gains without pushing the performance envelope to extreme. Max horsepower is 14 and max torque is 12 which all comes in at 5600 RPM.
 
The IPD Boxster S Plenum will provide 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 modification on the market and will further complement other mods such as exhaust, software and beyond.