Description
The IPD 74mm Intake Plenum for the Porsche 987.2 Boxster S 3.4L is a precision-engineered, direct bolt-on performance upgrade designed specifically for Porsche’s Direct Fuel Injection (DFI) platform from 2009–2012. This upgraded plenum replaces the factory unit while retaining the original OEM 74mm throttle body and all factory hardware for a straightforward installation.
The IPD intake design improves airflow characteristics by delivering smoother, less turbulent, and more efficient air movement through the intake system. By increasing airflow velocity and optimizing internal plenum dynamics, the system enhances engine breathing and improves overall performance.
The result is a measurable increase in horsepower and torque, along with improved responsiveness throughout the rev range.
Vehicle Fitment:
Porsche Boxster 987.2 S 3.4L (2009–2012)
Key Features:
Direct bolt-on replacement for factory plenum
Retains OEM 74mm throttle body
Optimized for Porsche 987.2 DFI engine platform
Improved airflow efficiency and velocity
Reduced intake turbulence
Enhanced mid-range and top-end power
Uses all factory mounting hardware
No permanent modifications required
OEM-style fitment and integration
DFI Intake System Optimization:
The Porsche 987.2 DFI engine features a highly engineered intake system designed for balanced performance, efficiency, and emissions compliance.
The IPD 74mm Plenum improves upon this factory design by refining internal airflow paths, reducing restriction, and increasing airflow speed into the engine.
This results in improved combustion efficiency and stronger performance delivery under load.
Performance Gains:
The IPD 74mm Intake Plenum delivers an estimated increase of 12–14 horsepower at the wheels.
Unlike earlier naturally aspirated IPD designs that emphasized mid-range gains, this DFI-specific plenum produces a similar shaped power curve to stock but with noticeably stronger performance from the mid-range through to redline.
Drivers experience improved acceleration, stronger high-RPM pull, and more consistent power delivery across the rev range.
Installation:
The IPD 74mm Intake Plenum is designed as a direct bolt-on upgrade using all existing factory hardware and components.
Installation is straightforward for mechanically experienced users; however, IPD strongly recommends installation by a qualified Porsche technician to ensure optimal performance and reliability.
Warranty & Usage Note:
All IPD products are designed for vehicles operated on public roadways.
Each IPD plenum includes a 2-year manufacturer warranty covering defects in materials and workmanship.
Warranty coverage is void if the product is used off-road or on race tracks.
