IPD Plenums 997.1 Turbo Intake Plenum 74mm Big Brake Kits Includes: 100 PSIg Stainless Sensor Includes: 100 PSIg Stainless Sensor By doubling the thickness of the OEM core and increasing the frontal surface area by 151% you gain an extraordinary amount of added cooling Unlike the 996 Turbo the 997 Turbo requires an “adaptation” period that can be fully realized with either a series of hard pulls on the dyno or 10 to 50 miles of hard driving which of course IPD recommends only be performed on a closed circuit race track The incredible 997 Porsche Turbo is the most revolutionary and capable Porsche Turbo to ever come out of Germany