The 74mm Plenum utilizes the factory 74mm throttle body. This version provides impressive power gains throughout the entire power band, especially in the midrange where its most critical and most enjoyed. The 74mm Cayman/Boxster S Plenum application is recommended for enthusiasts looking for considerable performance gains without pushing the performance envelope. Power gains are realized throughout the entire power band without any loses in power.
The IPD Cayman S Plenum will provides the most impressive power gains of any engine upgrade available and will truly transform your driving experience. The 74mm IPD Plenum is the best Cayman or Boxster modification on the market and will further compliment other mods such as exhaust, software and beyond.
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