IPD Plenums 991 DFI Carrera 3.4L IPD Plenum R&R 9 grade bolts are the

9 grade bolts are the best available

No official testing has been conducted as of yet but based on past experience and customer feedback we expect power gains to be in the mid 30+ range and torque over 40

2 Competition Plenum

This provides more stability and predictability to the rear suspension for tighter handling

IPD Plenums 991 DFI Carrera 3.4L IPD Plenum R&R 9 grade bolts are theThe all new specifically designed IPD 3. 4L DFI Carrera intake Plenum is a direct bolt on upgrade that replaces the factory air distributor and utilizes all pre existing factory hardware including the OE factory throttle body. The improved IPD intake design creates increased air velocity and air speed resulting in impressive power and torque gains for Porsche driving enthusiast. The superior design of the Carrera DFI IPD Plenum provides an additional