Background
Upon launching the 992 generation, Porsche had abandoned the naturally aspirated engine for the Carrera models. From now on, all 911´s are turbocharged! There are a few differences in between the Carrera and the Turbo models, the displacement being the most obvious, but they also share a lot of components – the plenum is one of! Throughout the entire development of the 992 products, we had unlimited in-house access to a 992. This way of procedure is how we always do it. It allows us to test our theories, prototypes and 3D-prints without hurdles or delays. We´d like to think that this shows on the finished product – ultimately refined without compromise. We are confident with what we have to offer the market!
Development
With the starting point in a comprehensive 3D-scan of the engine bay to get the structural limitations, we set to work. With the experience we had from previous Porsche plenums, we soon realized the need for a y-joint rather than the t-shaped OE plenum. From an airflow perspective the y-shape is more efficient as it distributes the air more evenly and with less pressure drop. We chose, as usual, to manufacture the plenum from cast aluminum as it allows for shapes that CNC-machining cannot replicate, and to us function always conquers form. Maximum airflow supersedes the bling factor!
The do88 plenum
The plenum is designed with soft, sweeping lines. Radiuses and angles have been revised and reworked many times over. The connections are CNC-machined and the plenum comes with suiting silicone hoses for optimum fitment and durability. The improvement in airflow is verified using CFD (Computer Flow Dynamics) as well as in our Superflow SF1020 flow bench.
Taking away restrictions for the turbocharged air that reaches the inlet will provide better throttle response and performance gains all over the powerband!
Key figures
Fits:
Porsche 911 (992)
Model years: 2019-
Model: Turbo / Carrera / Carrera 4 / Carrera S / Carrera 4S / Carrera GTS / Carrera 4 GTS
OEM reference.
0PB128335C, 0PB128335A, 0PB128333E
This diagram shows the air flow at different pressure drops of do88 Plenum compared to the OE Plenum:
