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GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015
GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015
GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015
GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015
GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015
GrimmSpeed Boost Control Solenoid - Mitsubishi Evo X 2008-2015

GrimmSpeed Boost Control Solenoid

Mitsubishi Evo X 2008-2015


Estimated to ship in 15 days
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Features & Product Details

RallySport Direct proudly carries a great selection of quality performance upgrades by our friends over at GrimmSpeed.


This is the GrimSpeed Electronic Boost Control Solenoid. This is one of GrimmSpeed's most utilized upgrades due to the durability, simplicity of use, and the performance it delivers. This is a must-have for those of you who are getting your vehicle fine-tuned to hit boost targets quickly with precision. The 3-port system works by interrupting the boost signal that travels from the turbocharger to the wastegate. Additionally, the GrimmSpeed BCS will provide a much tighter boost control and consistency that makes life easier for the tuner as the boost control will be more prompt and precise. 




  • Decreases the spool time
  • Gets into boost much quicker and flows 10% more than the competition
  • The proprietary internal modification design prepares the solenoid for extreme conditions below the vehicle
  • Plug and play operation directly into the factory wiring harness with no splicing required
  • Works safely with the factory ECU
  • Factory fitment with a clean installation
  • Provides a quicker, and more precise boost control response
  • Makes tuning more simple and direct for the tuner
  • The only direct bolt-in BCS available for your application
  • Users can use AN fittings with this solenoid
  • MAC valve has completely custom-made the valve for GrimmSpeed
  • Includes the 3-port boost control solenoid
  • Includes nickel-plated fittings
  • Includes the plug and play connector
  • Includes a model-specific laser cut and CNC bent steel bracket that is zinc plated with stainless press-in nuts
  • Includes 1/4" vacuum hose and zip ties
  • Includes all of the rest of the necessary hardware for the installation

    Product Video


    Brand: GrimmSpeed
    Adjustable: Yes
    Color: Black
    Number of Ports: 3
    OEM Replacement: Yes
    QTY: 1
    Tuning Required: Yes
    Mfgr. Warranty: Lifetime
    Condition: New Product
    Return Policy:
    RallySport Guarantee



    3 Reviews
    5 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    Grimmspeed ebc 6 years ago
    5out of 5stars
    This came fast shipping and was a breeze to install. Product works exactly like it's supposed to. Highly recommend for people using the ots Cobb accessport.
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    Excellent! 7 years ago
    5out of 5stars
    Rick Babcock
    A must have purchase especially if you were going to tune. I recently went and got my 2014 Evo 10 tuned but before we did my tuner had me do a third gear pull and registered 27 PSI tapered down to 16 on the stock boost control solenoid. We then installed the GrimmSpeed 3 Port boost controller and it's now holding 26 PSI across the powerband tapering down to 22 absolutely a must-have
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    One of the best things for an evo x 8 years ago
    5out of 5stars
    There are two good things that you can do to an evo x to make it better, even if you are not really into tuning (like fear from strict emission standards), but a 3 port and a tune works magic, reduces lag, improves engine response, no more slow transition from 3k rpm to high revs, the whole rev band seems to work smoother. Just remember that you need wideband and tune, never install without it, and it is not rocket science to install it, anybody can do it, it is harder to remove the stock 2 port than to install this one.
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    • Q: Would I...  whats a car?9 years ago

      Need to buy anything besides the boost controller to support it?
      • 1 of 1 people found the following answer helpful

        A:  As far as parts go, this is all you will need. Everything is included to install it. You will need to have your car tuned after the install or you will over boost. Mike

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