Process West Intake Manifold Street Version Subaru STI 2004-2021

Part #: PRW - PWIM002. The Process West billet intake manifolds blend stunning looks with top - notch performance for WRX/STI models. Years of research, numerous prototypes, and a complete redesign of the 'Corsa Veloce' range have led to this amazing product. Available in two main setups, they feature a full billet plenum with large billet bell mouths and thick - wall polished CNC mandrel bent tubes. High - end TIG welding makes them strong enough for up to 100psi boosted applications. No other product matches their strength and detail. The plenum volume and runner length are designed for great low - and mid - range torque and increased high - rev power. The large plenum allows for significant gains while still working with the factory AC. The Street version suits all performance levels. Tests on stock and highly modified setups show about a 9% gain in torque and power, even on E85 - running systems. If you want a street - friendly yet powerful setup with AC comfort, the Street version manifold is the answer.

Using this intake manifold is straightforward. First, make sure your vehicle is a 2004 - 2021 Subaru STI. If you're not experienced with car parts installation, it's best to have a professional do it. When the manifold is installed, you can start your car as usual and enjoy the improved performance. As for maintenance, regularly check the connections to ensure they're tight. Look for any signs of damage, like cracks or leaks. If you notice any issues, get them fixed right away. Keep the manifold clean by wiping it down occasionally. This will help it last longer and keep performing at its best.