GrimmSpeed Boost Control Solenoid - 2007-2013 Mazdaspeed3
GrimmSpeed Boost Control Solenoid - 2007-2013 Mazdaspeed3
GrimmSpeed
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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.
DETAILS:
- 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
WHY WE CARRY THIS
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
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.
DETAILS:
- 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
