High flow turbo inlet hoses that replace the restrictive stock plastic pipes on the 991.1 and 991.2 Turbo. do88 measures 31 percent more airflow on standard turbochargers and 50 percent with upgraded turbochargers, with a 2.5 inch (63 mm) inner diameter at the narrowest point, smooth transitions and a very smooth internal surface. Silicone will not soak up engine bay heat the way the OEM pipework does, and stainless steel wire reinforcement stops the hoses imploding at high mass flow. This version is cut for the OEM compressor housing. The kit contains four wire reinforced silicone hoses, two plain silicone hoses, two breather valves, two CNC machined VTG adapters, clamps, screws and detailed instructions. From July 2026 do88 no longer supplies a new jet pump valve, so the original valve is reused, per step 36 of the instructions.
| Type | High flow silicone turbo inlet hose kit |
| Material | Silicone with stainless steel wire reinforcement |
| Color | Black |
| Compressor Housing | OEM (a separate version covers the 51.5 mm housing) |
| Inner Diameter | 2.5 in (63 mm) at the smallest point |
| Tested Flow | 31% more airflow on stock turbochargers, 50% on upgraded turbochargers |
| Included | 4 wire reinforced silicone hoses, 2 silicone hoses, 2 breather valves, 2 CNC machined VTG adapters, clamps and screws, installation instructions |
| Note | The original jet pump valve must be reused, see step 36 of the instructions |
| Part Number | do88-kit179S |
| OEM Replacement | 99111002371, 99111002372, 9A111004172, 99111002471, 99111002472, 9A111004272 |
| Quantity | 1 kit |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2013-2019 | Porsche | 911 (991.1 / 991.2) | Turbo / Turbo S |
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