987.1 Boxster S/Cayman S (3.4L) IPD “Competition” Plenum: HP Gains 20+ / Torque 18+ Requires Upgrade to 82mm TB

The IPD Boxster “Competition” Plenum was designed to meet the needs of the most demanding Boxster S enthusiasts. The “Competition” Plenum is even larger and utilizes the 997 GT3 82mm throttle body allowing it to deliver even greater air flow and substantial increases in performance. **Requires 82mm Porsche throttle body (Additional purchase)**