| Porsche 996 X51 / IPD Intake Plenum
** 996 with factory X51 Package **
1998-2004 Porsche 996 X51
Made Proudly in the United States
The 996 did not mark the beginning of a new Porsche chapter, it marked the beginning of a new Porsche book. The prolific 911 was baptized and emerged water cooled, leaving the legendary air cooled engine to live in Porsche history.
The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
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The 996 3.6L X51 package was typically found on the "40th Anniversary" limited edition cars (MY 2004) but could also be special ordered by performance minded customers. The X51 engine package increased horsepower from the standard 316 up to 345.
The X51 Carrera's came equipped with a variety performance upgrades, both internally and externally, that made the cars very desirable for Porsche drivers looking for something closer to the GT3 experience.
The X51 engine package was blessed with many wonderful internal performance upgrades but Porsche still utilized the factory air distributor opening the door for the IPD Plenum to provide even more additional power.
The 996 X51 IPD Plenum is designed to use all the pre-existing factory hardware and OE 74mm throttle body. The revolutionary design of the IPD "Y" style Intake Plenum increase horsepower by 24 and torque by 22 (at the wheels).
The X51 Plenum is a direct bolt on replacement and installation is relatively straight forward for mechanically inclined DIY customers although IPD strongly recommends all Plenum installations be performed by a trained and qualified Porsche technician.
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