IPD Plenum 987.1 Cayman/Boxster 2.7L/3.4L Competition 82mm Plenum (‘07-’08): Power Gains 20+ WHP / 18+ WTQ Requires upgrading factory 74mm TB with GT3 82mm TB. Fits S and Non-S models

987.1 Cayman 2.7/3.4L Competition 82mm IPD Plenum ('06-'08) | Part #87182

The IPD Cayman "Competition" Plenum was designed to meet the needs of the most demanding Cayman 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 but produces even more horsepower gains (20+) with Caymans already equipped with after market "cat back" high flow performance exhaust and other performance mods.