Process West Intake Manifold
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Process West Intake Manifold - Subaru WRX (VB) FA24
Process West is an Australian performance engineering brand that develops dyno proven, bolt on upgrades for Subaru platforms. This intake manifold was purpose built for the Subaru WRX (VB) FA24, pairing a billet plenum with cast large bore runners and a fully functional billet Tumble Generator Valve section to lift intake flow well beyond the factory one piece design.
This listing covers the Subaru WRX (VB) fitted with the FA24 engine, MY22 onward. It's available in Standard and Port Injection configurations - use the variant selector on this listing to choose the version that suits your build.
Important: This manifold lowers and relocates the throttle body closer to the firewall, so it must be run with a front mounted intercooler. Top mount intercooler setups are not compatible, and many front mount kits will require the Process West Throttle Adaptor Pipe (PWIM010AP) for correct piping alignment.
Key Features
- Billet plenum with cast large bore runners for maximum flow
- Fully functional billet TGV section with operational shafts and butterflies
- NO CEL design, retains factory drive motors and sensors
- Computer designed porting with increased plenum volume and runner capacity
- Dyno proven power and torque gains, with larger gains on tuned FA24 engines
- Port Injection variant (PWIM010PI) adds four additional injector mounts
- Direct fit design, no custom fabrication required
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your WRX's build date and engine configuration before ordering.
Not sure if this manifold suits your build? Contact our team at sales@chicaneaustralia.com.au for expert advice.
Vehicle Compatibility
| Make | Model | Chassis | Engine |
|---|---|---|---|
| Subaru | WRX | VB | FA24 |
Technical Specifications
| Spec | Value |
|---|---|
| Application | MY22+ Subaru WRX (VB), FA24 engine |
| Plenum construction | Billet aluminium |
| Runner construction | Cast, large bore |
| TGV (Tumble Generator Valve) section | Billet, fully functional with operational shafts and butterflies |
| Variants | Standard (PWIM010); Port Injection (PWIM010PI) |
| Port Injection variant addition | 4 additional port injector mounts |
| Check Engine Light | Part of Process West 'NO CEL' range — no CEL triggered on install |
| Intercooler compatibility | Front-mounted intercooler required; not compatible with top-mount intercooler setups |
| Throttle Adaptor Pipe (sold separately) | PWIM010AP — required for many front-mount kits and Process West Front Mount Intercooler Kits |
| TGV delete conversion parts (sold separately) | PWTD07 |
No instructions available for this product.

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