Process West Billet Intake Manifold
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Process West Billet Intake Manifold - Subaru WRX/STI (GC8) MY99-00 - Cable Throttle, Reverse Orientation
Process West is known for CNC billet induction components engineered without compromise, and this manifold is the result of years of prototyping and refinement. Built for the Subaru WRX and STI, it combines a full billet plenum with polished, thick wall mandrel bent tube runners for genuine performance gains over the factory unit.
This listing covers the GC8 chassis WRX and STI, MY99-00, in the cable throttle, reverse orientation configuration. Available in Silver (PWIM006) or Black (PWIM006B) — select your preferred finish from the variant options on this listing.
Note: This reverse orientation, cable throttle version is specific to MY99-00 GC8 models and is not interchangeable with hydraulic throttle or standard orientation manifolds.
Key Features
- Full billet aluminium plenum with billet bell mouths
- Thick wall, polished CNC mandrel bent tube runners, TIG welded
- Rated for boosted applications up to 100 psi (689 kPa)
- Plenum and runner volume optimised for low and mid range torque without sacrificing top end power
- Cable throttle actuation, reverse orientation configuration
- Custom throttle flanges available on request
Vehicle compatibility, OEM part numbers, and fitment notes are provided in the tabs above. Please confirm your vehicle's model year and throttle 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 | GC8 | - |
| Subaru | WRX STI | GC8 | - |
Technical Specifications
| Spec | Value |
|---|---|
| Construction | Full billet plenum with billet bell mouths, thick-wall polished CNC mandrel bent tubing, TIG welded |
| Boost rating | 689 kPa (100 psi) |
| Throttle configuration | Cable throttle, reverse orientation |
| Fitment | Subaru WRX/STI (GC8), MY99-00 |
| Finish options | Silver, Black |
No instructions available for this product.

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