Intake Plenum, 911 Carrera / S (991)
Replaces the factory T-shaped air distributor with a Y, evening out the path length to each bank.
Induction & Charging In production confidence: medium
Manufacturing
| Manufacturer | IPD Plenums |
|---|---|
| Origin | 🇺🇸 United States Vendor head office — place of manufacture not stated |
| Process | Cast |
| Additively manufactured | No |
| Notes | No competition variant exists for the 991, because 82 mm remains the largest throttle body Porsche offers for it. |
Published figures
| Power gain | +15 hp |
|---|---|
| Basis | Published by the manufacturer; not independently verified. |
| Notes | Published as 15+ hp and 14+ lb-ft at the wheels, concentrated in the mid range rather than at peak. |
Fitment
| 991 | Carrera, Carrera S |
|---|
Sources
- 991 Carrera Base/S — IPD Plenums, accessed 2026-08-17