do88 Porsche 911 Turbo & Carrera (991 / 991.2) Performance Plenum

Unlock quicker turbo spool and sharper throttle response with the do88 991 Plenum upgrade. Engineered to replace the restrictive factory T-shape design, this high-flow 911 intake plenum uses a specialized Y-shape transition to distribute air more efficiently to the intake manifolds, reducing pressure drop and increasing total airflow.

Performance Engineering for 911 Turbo & Carrera

• Y-Design vs. Factory T-Shape: The OEM plenum forces air into an abrupt 90-degree turn. The do88 Y-pipe plenum features soft, sweeping internal radii to ensure air reaches the cylinders with less turbulence.

• Cast Aluminum Construction: Unlike CNC-machined parts that are limited by tool angles, our cast aluminum design allows for complex internal "freeform" shapes that maximize CFM.

• Proven Airflow Gains: Flow-bench tested at 846 CFM (a 5% increase over stock) at 0.1 bar pressure drop.

• Direct Bolt-On Fitment: Includes CNC-machined connections and high-durability silicone hoses for a leak-free, OEM-plus installation.

Key Technical Figures:

• Airflow Improvement: 846 CFM vs 808 CFM (Stock).

• Design: Y-style air distribution for balanced cylinder filling.

• Material: High-grade cast aluminum with CNC-finished ports.

• Included: All necessary accessories and hoses for a complete installation.

Why This Made the Sone Racing List:

I’ll be honest: I was never a big believer in aftermarket plenums. My thinking was always, “If it were that easy, Porsche would’ve done it from the factory.” The Sone Racing Take: After installing the do88 plenum on my own car, I was blown away. The turbo spool is noticeably quicker and the throttle response is sharp and immediate. For track use, it is a night-and-day difference in how the car exits corners. It’s one of those rare "feel it immediately" upgrades for the 991 platform.

Vehicle Compatibility:

Porsche 911 (991.2 Generation)

• Years: 2017, 2018, 2019

• Models: Carrera / Carrera S / Carrera GTS / Carrera T

Porsche 911 (991.1 & 991.2 Turbo)

• Years: 2013, 2014, 2015, 2016, 2017, 2018, 2019

• Models: Turbo / Turbo S