Intake Manifolds

Process West 2015+ WRX TGV Deletes 

PLEASE NOTE: FUEL LINES AND INJECTORS ARE NOT SUPPLIED WITH THIS KIT.

Designed for the MY15+ FA20DIT WRX the Process West ‘DITTO’ (Direct Injection Tubular Original) compromises a mix of billet plenum and cast large bore runners to achieve the highest intake flow rates possible.  Over 12 months from initial design to testing on our own in-house WRX has allowed us to ensure not only guaranteed performance gains (see attached dyno sheet of a totally standard WRX with and without DITTO) but also perfect fitment. Note DITTO is a direct fit for Process West top and front mount intercooler equipped vehicles.* (see application notes below).

Power gains come from computer designed and tested internal plenum porting and an overall larger volume and greater runner capacity for optimal cylinder filling. Not only does DITTO offer these advantages but it is also part of our new ‘NO CEL’ product range that allows fitment to a totally standard vehicle with no Check Engine Light or Tuning required. Obviously even further improved results can be achieved in tuned versions of the FA20, with our experience showing the greater the power output, the greater the gains!

The Port Injection DITTO RACE version provides unmatched tuning flexibility in the form of an additional 4 port injector mounts. Designed to take any EV-14 specification fuel injector this delivers tuners the flexibility to add substantial extra amounts of fuel from an aftermarket ecu/injector driver to give a true 1000+hp worth of capacity. Whilst Process West don’t offer the computer hardware, we do deliver the functionality that highly tuned engines need.

*APPLICATION NOTES

Process West VERTICOOLER requires fitting kit – Part Number: PWIM007VFT HERE

Process West DITTO will directly fit with all front mount intercooler kits that use the stock inlet manifold.

Process West DITTO may require other brand (non-Process West) Top Mount Intercoolers have bracket modifications to fit.

For cars requiring even more power in the upper rev range the track version can be supplied with shorter billet TGV's (lower runner section). HERE

The RCM Thermal Gasket kit contains everything required to install our Phenolic Spacers to your Impreza.  

The kit is designed to aid in the reduction of the inlet air temperature, by isolating the inlet manifold from the heat generated by the engine's cylinder heads.  

By reducing the temperature of the inlet manifold, the temperature of the inlet charge is alos reduces.

 The density of cooler is greater than that of warm air, and a denser intake air charge contains more oxygen which results in the potential for increased power and torque.

What it does:

Greatly reduces the transer of heat from engine to intake manifold thus reducing heat soak.One of a kind true Phenolic material, not cutting board material like others.The cooler your intake temperature is the denser the air is which leads to more powerFor every 5 degree reduction in air temperature, increases power by 1%.The cooler and denser the intake air that the engine sucks in, increases the amount of air that can be mixed with fuel thus increasing efficiency.

How it works:

The intake air in your engine travels through the airbox into the turbo, then into the aluminum intake manifold. The air exits the intake manifold and goes directly into the engine.

While the intake air is within the intake manifold it picks up alot of heat from the aluminum intake manifold. This added heat reduces air density thus reducing engine power capabilities.In stock form your engine has a steel gasket between the intake manifold and engine which allows the heat from the engine to quickly transfer into the intake manifold. By replacing this steel gasket with the GrimmSpeed™ Phenolic Spacer you are greatly reducing the transfer of engine heat into the intake manifold.Phenolic Spacers are able to withstand 500+ degrees F. Subaru engines run at the hotter end of operation around 200 degrees F, so the Phenolic Spacer is well within its max running temperature. GrimmSpeed™ has tested that it is also safe to run race fuel, E85, and methanol with the Phenolic Spacers.The Phenolic Spacer will conduct 300-900 times less heat than the oem steel gasket.

What it does:

Greatly reduces the transer of heat from engine to intake manifold thus reducing heat soak.One of a kind true Phenolic material, not cutting board material like others.The cooler your intake temperature is the denser the air is which leads to more powerFor every 5 degree reduction in air temperature, increases power by 1%.The cooler and denser the intake air that the engine sucks in, increases the amount of air that can be mixed with fuel thus increasing efficiency.

How it works:

The intake air in your engine travels through the airbox into the turbo, then into the aluminum intake manifold. The air exits the intake manifold and goes directly into the engine.

While the intake air is within the intake manifold it picks up alot of heat from the aluminum intake manifold. This added heat reduces air density thus reducing engine power capabilities.In stock form your engine has a steel gasket between the intake manifold and engine which allows the heat from the engine to quickly transfer into the intake manifold. By replacing this steel gasket with the GrimmSpeed™ Phenolic Spacer you are greatly reducing the transfer of engine heat into the intake manifold.Phenolic Spacers are able to withstand 500+ degrees F. Subaru engines run at the hotter end of operation around 200 degrees F, so the Phenolic Spacer is well within its max running temperature. GrimmSpeed™ has tested that it is also safe to run race fuel, E85, and methanol with the Phenolic Spacers.The Phenolic Spacer will conduct 300-900 times less heat than the oem steel gasket.