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Company23 Anti-Surge Boost Control Solenoid - Subaru WRX 2015+

Manufacturer Part # 525


MSRP: $229.95

Ships within 3-4 weeks
Qualifies for free shipping!


This is Company23’s new innovative Anti-Surge Boost Control Solenoid. Here is an essential part that will eliminate that common internal and external wastegate flutter providing the driver with a consistent, yet a very strong boost curve. This is game-changing boost control technology for the turbocharged flat-four platform, which utilizes patent-pending electronic anti-surge technology.

How does it compare with other 3-port boost control solenoids? The main feature is that it eliminates wastegate flutter. It prevents oscillation in the boost curve, and it makes more horsepower and torque when compared to a detuned map that is focused on eliminating flutter. 

When compared to manual style boost controllers, the Company 23 Anti-Surge unit will allow RPM/load dependent boost control. You won’t have to worry about partial throttle/full boost during closed loop. And it does not require retuning for temperature or seasonal changes, or even changes in elevation. 

Other features include:

•    Tuners can create precise boost curves that increase spool and horsepower, by not detuning your vehicle to eliminate boost oscillation.
•    Works great on cars ranging from stage 2, and upwards of 800 HP.
•    Very tuner friendly. This solenoid can be as simple to tune as your traditional 3-port solenoid.
•    Installation is simple with OEM style mounting brackets and electrical connectors. This is a plug-in and start tuning device.
•    Crafted from CNC machined and anodized 6061 aluminum housing, and it is completely sealed for long-lasting use.
•    The boost controller is a custom 3-port solenoid designed by Company23 and manufactured by MAC.
•    6mm (1/4”) CNC machined hose fittings. 

In conclusion, if you’re looking for that boost control solenoid that works well with your modifications, and will provide strong boost control, then this is the unit for you. There’s no need to opt for a standalone boost control system. This is an easy plug and play unit that will deliver more performance that is less complex, and cost-effective. Works well with factory or aftermarket style turbochargers.

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Brand: Company23
Adjustable: No
Color: Grey
Number of Ports: 3
OEM Replacement: Yes
QTY: 1
Tuning Required: Yes

Mfgr. Warranty: Limited Lifetime Warranty
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


This product has no user uploaded media. You can upload your photo or video of your install by posting a review. Reviews:

  • Q: 2016 sti diy  Brian16sti 2 years ago


    Are you guys planning on doing a diy video for install? Also, I'm running Cobb ap stage 1+ tune with nameless axle back and Cobb intake right now, would I need a pro tune or is the ots map ok?

    • A: I am not aware of any plans for a DIY video at this time. This solenoid will require a custom tune.

      Josh P. 2 years ago
  • Q: fitment on '15 WRX  Prabh 2 years ago


    I don't see any options of different solenoids so wondering if this fits for a 2015 WRX as well?

    • A: This does fit the 2015 WRX.

      Company23 2 years ago
  • Q: a fix for the "flutter" sound at peak boost w/ other ebcs?  vash337 3 years ago


    please install this on your shop wrx Rick. everyone is going to go for the 60 dollar cheaper unit, leaving us without customer feedback, youtube videos of how it sounds, graphs of it's stability , etc. If RSD could test this, those of us willing to pay the difference for a superior product will have that option.. although the GS ebcs provided results on my11 wrx, i hated the flutter sound made when holding peak boost.

    • A: We will pass your request along to Rick, but we cannot speak on his behalf right now.

      Zach G. 3 years ago