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Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid (Part Number: )
Company23 Anti-Surge Boost Control Solenoid
Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
Read 1 Reviews | 1 Q&As
Part # 522
msrp: $229.95

In stock! Ships same day

Features & Product Details

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 platforms, 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 re-tuning 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-i 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. 


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.



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Company 23 antisurge surge 2 years ago
5out of 5stars

I'll start by saying I've been a subby tech for a little over 10 years. I'm running the Tial 38mm gate with the GS 3 port ND hate the cha cha cha cha from the PWM signal. I love the sound of a manual but still wanted to utilise the factory ECU 's ability to add or pull boost based on elevation. You you have to spend. Little more scratch on the anti surge, but in my options worth it. Butter smooth boost responce, and sounds like a manual BC. As a bonus you hear the rumble from the screamer pipe. I am currently going to put one on 4 personal friends STI's. Well worth the money if you hate the cha cha cha PWM from the other 3 ports!!
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  • Q: Power gain? Or just sound?  Bradybell333 years ago

    I have a Cobb 3 port tuned. What power benefits will this give me over that? Any sort of numbers, or just a better curve? I know it will help eliminate boost shutter. Also, would this work on a Cobb ebcs map?
    • 0 of 1 people found the following answer helpful

      A:  This would essentially perform the same as Cobb's and GrimmSpeed's EBCS. Unfortunately, we cannot confirm if the Cobb OTS Maps are compatible. As they are designed using Cobb's EBCS.

      Brady R @ RallySport Direct 3 years ago  
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    • 1 of 2 people found the following answer helpful

      A:  This does not by itself increase power as that is dependent on the other engine modifications you have. However, if your tuner is detuning your map to minimize wastegate flutter with a standard 3 port boost control solenoid, you will see power and spool gains when it is retuned for the Anti-surge boost control solenoid.

      Company23 @ Company23 3 years ago  
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