Process West Intake Manifold Street Version Subaru WRX 2002-2005

Part #: PRW - PWIM004. The Process West Street Version Intake Manifold is a masterpiece. It's the fruit of years of real - world research, numerous prototypes, and redesigns. It features a billet plenum with CNC - machined tubes and high - end TIG welding, able to handle 100 PSI in forced induction setups. The plenum is made from tough billet aluminum with thick - wall polished CNC mandrel - bent tube parts. The carefully chosen plenum volume and runner length deliver aggressive low and mid - range torque and more top - end power. It's large enough for significant gains and still works with the factory AC unit. It's ideal for all engine modifications, and on a stock engine, you can see up to 9% gains in power and torque. It comes with multiple vacuum ports, a great addition to your engine bay. Make sure your car has a drive - by - cable throttle body before ordering. If not sure, contact our customer service.

Using this Process West intake manifold is straightforward. First, make sure your car's engine is off and cool. Then, carefully install the manifold following the standard engine installation procedures. As for performance, it's designed to give you better low - to - mid - range torque and more top - end power right away. When it comes to maintenance, keep an eye on the vacuum ports for any signs of blockage or leaks. Regularly check the TIG - welded joints for any cracks or damage. If you notice any issues, contact a professional mechanic. Also, remember to verify that your car has a drive - by - cable throttle body before you even start the installation. If you're unsure, reach out to our customer service team for help.