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COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
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User Media for: COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008
User Media for: COBB Tuning 3-Port Boost Control Solenoid - Subaru WRX/STi 2002-2007 / Forester XT 2004-2008

COBB Tuning 3-Port Boost Control Solenoid

Subaru WRX/STi 2002-2007 / Forester XT 2004-2008

In response to recent developments, we have decided to remove select items from sale to ensure we are compliant with all applicable emissions requirements

Features & Product Details

In response to recent developments, we have decided to remove select items from sale to ensure we are compliant with all applicable emissions requirements

RallySport Direct is your number one source for quality upgrades and enhancements brought to you by COBB TUNING. 

 

This is the COBB 3-Port Boost Solenoid (BCS). This is an excellent upgrade for those looking for precise boost control that is easy to install and tune. This BCS will eliminate boost fluctuations and boost creep inherent in the OEM boost control system, providing stable and repeatable boost control to base the vehicle’s tune on. It is equally capable of providing this stable boost control at stock boost levels as well as extremely high boost levels associated with big-power builds.

 

 

DETAILS:

  • Accurate and consistent boost control
  • Plug and play 18-gauge wiring harness
  • 1/8" nickel-plated barbed fittings
  • Rated up to 120 psi
  • Includes custom aluminum BCS mount
  •  

     

    NOTE:

  • Custom tuning required - please contact your preferred tuning professional in order to safely utilize this component
  • Product Video

    Specifications

    Brand: COBB Tuning
    Adjustable: Yes
    Color: Blue
    Number of Ports: 3
    OEM Replacement: Yes
    QTY: 1
    Tuning Required: Yes
    Mfgr. Warranty: 1 Year
    Condition: New Product
    Return Policy:
    RallySport Guarantee
    WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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    REVIEWS & CUSTOMER MEDIA

    27 Reviews
    4.9 out of 5 Stars
    5 Stars
    (25)
    4 Stars
    (1)
    3 Stars
    (1)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    COBB Tuning 3-Port Boost Control Solenoid ( Part Number: 712750)
    COBB Tuning 3-Port Boost Control Solenoid ( Part Number: 712750)
    Great product 12 months ago
    5out of 5stars

    Super easy install, with great boost performance, with noticeable difference in smoothness! Much better than the stock 2 port !
      
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    0 of 1 people found the following review helpful
    Cobb three port EBCS 2 years ago
    4out of 5stars

    one size fits most type of product. The installation left a bit to be desired. I have an 03 WRX wagon. the OEM EBCS has rubber bushings insulating the solenoid from vibrations from the car. The Cobb is not drilled for those. I drilled them myself and installed the rubber solenoids on the mounting bracket. After that it was a fantastic install. Although I may have paid another $20 if Cobb would have chosen to include proper silicone hose and tiny hose clamps instead of the rubber lines (near the turbo heat zone) and zipties. once I flashed the ECU to the +EBCS map the car ceased all boosting issues! I can reach 15+lbs of boost on the OTS map.
      
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    0 of 1 people found the following review helpful
    Boost Control Solenoid 3 years ago
    5out of 5stars

    A must have.
      
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    0 of 1 people found the following review helpful
    Necessary in place of analog actuator.  3 years ago
    5out of 5stars

    Huge difference over stock. Boost comes on earlier and smoother. While the Cobb OTS tune works, I wouldn't run it for long without a custom tune. I saw small knock events with regularity until I switching to custom. Stage 1+EBCS felt equivalent to Stage 2 w/stock boost controller dyno tune to my butt. Very easy to install.
      
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    3 of 3 people found the following review helpful
    Love this ebcs, BUT 4 years ago
    3out of 5stars

    Originally purchased this ebcs back in january of 2016 for a motor build. Got it tuned and it ran flawlessly for 19 months of daily driving, approximately 23,000 miles. Buttery smooth boost delivery even with a larger turbo. Out of the blue it died completely and it sent me down the troubleshooting black hole. Car would only make about 6lbs of boost with a bpt 20g, no CEL or any other obvious issues. Eventually figured out the ebcs was dead and popped in a new one. All boost issues were resolved and I'm back to normal. Sucks that the warranty on this ebcs is only one year from cobb, but after a lot of searching on forums I could not find a single thread that mentioned a failed aftermarket ebcs. That being said I am sure that I am one of the very few that have run into one failing.
      
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    QUESTIONS & ANSWERS

    • Q: Tuning  Reliable0611 months ago

      I have an 06 wrx wagon with an nvidia turbo back exhaust and Perrin intake. No cobb access port or any other modifications to speak of. Can I put this on and go or do I need to get it tuned after installing this?
      • 1 of 1 people found the following answer helpful

        A:  No, you would 100% need a tune for this and i would highly recommend one anyway with the mods you have, Thanks!

        Rick C. @ RallySport Direct 11 months ago  
          
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    • Q: Running SD on 06 STI   bbostock180956112 months ago

      I’ll be running speed density on my 06’ STI and I have on of these boost controllers. My questions is how to hook it up when I don’t have a turbo inlet pipe, I’m just running a 4” filter right off the turbo. Is there a way around this?
      • 0 of 1 people found the following answer helpful

        A:  You would need to add a vacuum source pre-turbo somehow. Either buy a short extension between the turbo and filter, or tap into the filter body somehow. Thanks

        Rick C. @ RallySport Direct 12 months ago  
          
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    • Q: Upgraded turbo and EWG  Strycn1n31 year ago

      Will this work with an aftermarket turbo and external wastegate on a 2007 sti? Also is this ECBS controlled by the settings in the v3 AccessPort or does it require an external controller?
      • 0 of 1 people found the following answer helpful

        A:  This does work with an aftermarket turbo and wastegate, but it will require custom tuning, and will not work with an existing tune or OTS map.

        Marcus E. @ RallySport Direct 1 year ago  
          
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    • Q: Do I need a boost controller   SubieGuy32 years ago

      I’m currently running a stage 1+ tune on my 2016 wrx but when I finally get a j pipe for it I’ll be running stage 2 will I need a boost controller for that or will I only need one if I go get it pro tuned ?
      • 0 of 0 people found the following answer helpful

        A:  Cobb's OTS map will only work with the stock BCS, you'll only want this if you're getting pro tuned.

        Marcus E. @ RallySport Direct 2 years ago  
          
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