SKU: 51954332540

GrimmSpeed Boost Control Solenoid - Subaru FA20 Kit (057041)

Sale price$163.80 Regular price$182.00
Save 10%

Pay in installments of $45.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 31 - Sep 5

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

GrimmSpeed Boost Control Solenoid - Subaru FA20 Kit (057041)If you've been in the Subaru game for long, you're probably well aware that a 3 port Boost Control Solenoid (BCS) is considered my most to be a 'must have' improvement before having your car tuned. GrimmSpeed has become the trusted brand in the BCS market, with tens of thousands of solenoids in operation today across the globe. The 2015 WRX offers a unique change of pace, as the factory 2 port solenoid is mounted directly to the plastic turbo inlet

If you've been in the Subaru game for long, you're probably well aware that a 3-port Boost Control Solenoid (BCS) is considered my most to be a 'must have' improvement before having your car tuned. GrimmSpeed has become the trusted brand in the BCS market, with tens of thousands of solenoids in operation today across the globe. The 2015 WRX offers a unique change of pace, as the factory 2-port solenoid is mounted directly to the plastic turbo inlet and interfaces with an o-ringed feature, rather than a vacuum hose. With expertise in designing machined parts and a tried and true boost control solenoid, we were excited to dig in and create a solution with an already proven pedigree of high performance and quality.

The advantages of a 3-port boost control system vs. the factory 2-port system are readily apparent during the tuning process. The 3-port systems works by interrupting the boost signal traveling from the turbo to the wastegate. That boost is redirected back into the turbo inlet and re-ingested by the turbo using our machined adapter. This is important, as the factory Mass Airflow Sensor has already measured that air and is expecting that your motor will use it during combustion, rather than venting it to the atmosphere. The factory configuration simply 'bleeds' the signal from between the turbo and wastegate, which creates a system that is a bit less complex, but reacts more slowly and with less precision. The chart above shows two boost plots. The 'before' is our 2015 WRX, dyno tuned by a third party protuner. The 'after' is the exact same tune, but after the installation of the GrimmSpeed 3-Port BCS. As you can see, the addition of the GrimmSpeed BCS shows much tighter boost control and consistency. This is safer for your car and easier for your tuner.

We began by recreating the factory turbo inlet and solenoid in CAD to ensure a perfectly fitting system. From there, we designed a beautifully fitting machined adapter that would recreate the o-ring sealing feature that the factory solenoid uses. This bracket features 1/8 NPT threads so that both barbed fittings (included) and AN fittings can be used interchangeably, for use with the GrimmSpeed BCS, Manual Boost Controller, or other boost control solutions. A small mounting bracket secures the solenoid to the machined adapter, to create a compact system, while still allowing those interested in running other boost control solutions the flexibility to do so. Mounting the solenoid directly in place of the stock solenoid allows for vacuum hoses of similar length and a shorter wiring harness. Lastly, we identified the exact electrical connector used on the stock solenoid so that the GrimmSpeed solution would be a true plug and play.

The GrimmSpeed Boost Control Solenoid has been proven time and time again. With tens of thousands on vehicles across the world, tuners trust it and our customers love it. What you see here is the same great solenoid with millions of miles of real world testing and an innovative mounting solution, designed specifically for your vehicle. The machined adapter also features standard NPT threads, should you choose to upgrade to AN lines and fittings, or even a different boost control solution (manual, standalone, hybrid, etc) down the road. Finally, the GrimmSpeed BCS system will arrive fully assembled and ready for installation. Because this upgraded solenoid affects the way that your vehicle controls boost (that's the point!), it is always recommended that you consult with a tuner immediately following installation. It is not recommended that you drive the car in a way that builds boost without doing so. If you have any questions, don't hesitate to get in touch with us directly!

Features:

  • Custom Machined Adapter - Makes use of the factory inlet recirculation port, instead of blocking it off
  • Black Anodized Finish - Protects the assembly from corrosion in an extremely demanding environment
  • 1/4in Barbed Fittings - Matches the factory turbo and wastegate hose size
  • 3-Port Solenoid - Proprietary internal modifications prepare the solenoid for extreme conditions below the vehicle
  • Plug-n-Play Wiring Connector - Plugs directly into the factory wiring harness with no modification required
  • Compact Design - No need to mount the solenoid elsewhere in the engine bay, increasing complexity and hose length

Includes:

  • GrimmSpeed 3-Port Boost Control Solenoid w/ Plug-n-Play Connector
  • Machined and anodized turbo inlet adapter w/ VITON O-Ring
  • Laser Cut and CNC bent steel bracket, black zinc plated w/ stainless press-in nuts
  • Zinc plated barbed fittings, preassembled w/ anerobic sealant
  • 2ft of 1/4in Vacuum Hose w/ zipties
  • All necessary hardware

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 51954332540

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 25 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Michelle DeRosa
Whiting, US
★★★★★ 4
Solar light quit, soon after I got it, battery maybe, but I love the angel and its design.
Color: White, Color: White
Love the detail of the angel, the facials features the details in the wings love the rose vine! Great garden decor the solar lights only worked the first day i even checked the battery position and the on off switch, I am assuming the battery died, but I can get another solar light i still love the design.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
S
SB
Belleville, US
★★★★★ 5
Good Quality
Color: White
This is absolutely beautiful. The lighting is ambient and not bright, with a warm glow (not as bright as the photos), and the charge lasts about 3 hours, give or take. The plaster mold is done very well so that it looks high end. It is also high-quality because I dropped it and it didn't break. For this reason, the price is right. This would be a great gift, but also a wonderful ornament for the yard or even as a welcome at the front door.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
L
logan zaske
Whiting, US
★★★★★ 3
Looks nice, and works well but the light doesn't fit well.
Color: White
I have mixed feelings about this little angel light. I got it for my mom, and she really loves it, and it looks great on the edge of the garden by the walkway up to the house. It doesn't provide a lot of light, but what it does offer is just enough at night to help people navigate until they're close enough for our motion activated porch light to turn on. The light however just doesn't come installed in the figure and doesn't fit very well into the hole it's supposed to sit in. I used some thick double sided tape as a gasket to hold it in place and solved the problem, but it's worth noting anyway. As for overall quality, it's ok, but not great. The figure is made of resin (plastic), and is fairly thin and not very strong. It's also very light and can be knocked or blown over by wind very easily. The casting on the angel itself is ok, but the socket the light sets into was misshapen and I also had to clean it up to even get the light to fit into it. (There was some flashing at the bottom of the hole that prevented it from sitting all the way down) Battery life seems to be pretty good, and lasts through the night as long as it gets enough sun during the day, but on cloudy days it tends to only last a few hours at most. And the light sensor does work well, it comes on right at dusk. As for value I'm not sure I'd say it's a great deal for the current price, but if you can find it on sale might be worth getting. Of course on anything decorative value is subjective and depends largely on how much you like the look of it. As always if I encounter any other issues or think of anything else to add I'll update this review!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026
A
Amanda Scarberry
Charlottesville, US
★★★★★ 5
solar figurine
Color: White
I recently added these angel figurines to my garden, and they are absolutely lovely. The solar-powered feature lights them up at night, creating a soft, peaceful glow that highlights my patio and lawn beautifully. The statues are well-crafted and durable, holding up nicely in sun and rain, and the white finish looks elegant against my greenery. They also make a thoughtful gift for moms or garden lovers. Overall, these are charming, functional, and decorative outdoor angel statues that add a serene touch to any garden or balcony.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 31, 2026
E
Erica
Natrona Heights, US
★★★★★ 5
Beautifully made sturdy angel statue!
Color: White
This outdoor angel statue is so well done! The craftmanship on it is amazing! Easy to hook in light. I do note that the light is a little wobbly in the holder section, but it looks fantastic! Lights up nicely! The wings and the detail on the angel really are well done. This statue is beautiful! It is pretty sturdy too. Looks well inside, but definitely will be a nice touch to my garden! Seems to be weather resistant as well!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 4, 2026

recommand products