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Process West Intake Manifold Street Version
Subaru STI 2004+
Features & Product Details
RallySport Direct proudly carries a great selection of performance intakes, intercoolers, and accessories brought to you by Process West.
Here, you are looking at the Process West Street Version Intake Manifold. This intake manifold is simply a work of art in the engine bay made using full billet aluminum construction with billet bellmouth-ended runners. This intake manifold is ideal for vehicles requiring more power in the upper rev range in big horsepower builds in your Rally Car, Race Car, Overlander, or even your Daily Driver!
DETAILS:
Please verify that your car is Drive by wire throttle body before ordering. If you are unsure, please contact our customer service team.
Specifications
Brand:
Process West
Finish:
Polished
Installation Hardware Included:
No
Material:
Billet Aluminum
Mfgr. Warranty:
1 Year
Condition:
New Product
Return Policy:
Standard
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REVIEWS & CUSTOMER MEDIA
Customer Photos and Videos
1 of 1 people found the following review helpful
5out of
5stars
Golf
Although my project not yet finish but this intake manifold has been living in the room. It made my eng. room look very beautiful. I love my boxer so much.
8 of 8 people found the following review helpful
5out of
5stars
scottgenex
This manifold is gorgeous. The welds are amazing and the attention to detail is fantastic. The first thing most people say when I pop the hood is wow. I was hesitant to install it on my car seeing as how fitment has only been confirmed for the STIs and not the 06-07 WRX. I did some thorough research and found that the throttle body and TGVs are identical and it bolted up just fine. I haven't seen it on too many street cars and found no installation instructions to follow. So this is a job for someone that has good mechanical know how and can do custom work. I did have to extend, replace and tie in a lot of vacuum lines, relocate some things, cut inter-cooler pipes and a few other odds and ends. It is pretty straight forward for the most part. I had to get a longer brake booster line to hook up properly, and as a helpful tip, remember that there is a one way valve pill inside the line that you will need to pull out. Be sure to put it back in the correct way or else you will have no power brakes (ask me how I know). I also bypassed the TB coolant lines since I felt no need for hot coolant going through my TB when the car doesn't see sub-freezing temperatures. I suggest marking (with tape and a pen) what vacuum and coolant lines go where as you remove them. I struggled with wondering where half of them went as I pulled them off in a frenzy to get this on. I paired this with Process West fuel rails so I could get some bigger fuel lines going. It has a lot more volume than the stock manifold, stands taller (especially with my Cosworth manifold spacers) and sits further back. Throttle response is definitely improved and intake sound is louder. Don't forget that you will need a custom tune after installing this to get the proper A/F ratios with all the added air coming in. All in all I am super satisfied with this product. It looks great under the hood and I have no doubt it will continue to impress me.Thanks RSD and Process West for all you do!
3 of 3 people found the following review helpful
5out of
5stars
Shortieshort6946566
I got this intake and was blown away by its quality. The welds a flawless. The amount of Cnc work is amazing. It even comes ported. There is nothing I can find wrong with it bolts right up. It does stand much taller then the stock mani.
QUESTIONS & ANSWERS
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Q: Fitment Suu_Bee1 year ago
Will this fit my 2016 Sti?
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0 of
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following answer helpful
A: Yes, this will fit all model years of STI from 2004 - 2021.
Lane H. @ RallySport Direct 1 year agoWas this answer helpful?
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Q: Gains? RedRock2 years ago
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A: Process West has shown up to 9% power and torque on an otherwise stock engine, and similar percentage gains on upgraded engines.
Lane H. @ RallySport Direct 2 years agoWas this answer helpful?
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Q: will this work with a ETS FMIC Ron.2 years ago
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1 of
1 people found the
following answer helpful
A: You will need to modify the intercooler pipe that goes to the throttle body. The throttle position on the Process West manifold is lower and closer to the firewall compared to stock.
Process West @ Process West 2 years agoWas this answer helpful?
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1 of
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following answer helpful
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Q: compatible? jc01273 years ago
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0 of
0 people found the
following answer helpful
A: You just need a set of Tgv deletes and the manifold bolts onto the Tgv’s
CameronKWas this answer helpful?
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Q: 2013 Subaru WRX AndrewGKing3 years ago
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0 people found the
following answer helpful
A: This will require you to switch to a FMIC as space becomes an issue when pairing this with any TMIC.
Tylo R @ RallySport DirectWas this answer helpful?
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