What It Actually Does
This solenoid controls pressure going to the wastegate actuator.
Instead of relying on a dumb mechanical spring (like a manual boost controller), the ECU or boost controller rapidly opens and closes the valve using PWM signals to regulate boost.
Result:
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More precise boost control
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Faster spool
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Adjustable boost maps
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Boost by gear / RPM / throttle (if ECU supports it)
Basically the difference between analog caveman boost control and modern ECU wizardry.
Features: 1.Pulse width modulation (PWM) driven. 2.Stable, reliable and fast boost targeting. 3.5.4W, 25.4ohm coil, Full vacuum to 120 PSI. 4.Suitable for most turbo and supercharged applications. 5.3 port solenoid – this is the most common method for controlling boost. 6.Compatible / used by most aftermarket ECU application (like haltech and MoTec). 7.Replacement for boost control solenoids offered by for Turbosmart, for Cobb Tuning, for AEM, for Autronic, for Haltech, for Grimmspeed and many others.
3 Port Boost Control Solenoid Valve Layout
Typical port routing:
| Port | Function |
|---|---|
| Port 1 | Boost pressure source (from compressor housing or intake pipe) |
| Port 2 | Wastegate actuator |
| Port 3 | Vent to atmosphere or intake |
This configuration allows the solenoid to bleed or redirect pressure, letting the turbo make more boost than the wastegate spring alone would allow.
Specification: Condition: 100% Brand New Item Type: Electric Solenoid Valve Material: Aluminum Alloy Model: 35A-AAA-DDBA-1BA Type: 3 Port Solenoid Voltage: DC 12V Power: 5.4 W Color: As the picture shown Package List: 1 * Electric Solenoid Valve 2 * Accessories
3 Port Boost Control Solenoid Valve Common Uses
You’ll see this style solenoid used with:
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Standalone ECUs
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Electronic boost controllers
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Aftermarket turbo kits
Popular compatible systems include:
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AEM EMS
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Haltech
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Hondata
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MegaSquirt
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Greddy Profec
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Turbosmart eBoost
So yes, if you’re running a turbo Honda build (which you probably are if Skunk2 parts are involved) this is exactly the type of solenoid most ECU setups expect.
Adopting PWM drive technology, fast response, realizing precise boost adjustment and adapting to all kinds of ECU tuning needs.
High-precision solenoid valve design ensures stable boost pressure, reduces fluctuations and improves engine response
Advantages vs Manual Boost Controller
| Manual Controller | Electronic Solenoid |
|---|---|
| Cheap | More precise |
| Simple | ECU controlled |
| Fixed boost | Multiple boost maps |
| Slower response | Faster turbo response |
Manual controllers are great… until you want something fancy like boost by gear instead of “hold on and pray.”
Turbo/mechanical boost is universal for most turbocharged and mechanically boosted models, with operating range from full vacuum to 120 PSI.
Industry-universal 3-port structure, direct replacement of stock or modified boost control valve, easy installation.
Supports Haltech, MoTec and other mainstream ECU systems, plug and play, no additional tuning required.
Typical Installation Location
Mount it:
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Near the turbo compressor housing
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Away from extreme heat
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Close to the wastegate actuator
Most setups use 3-4mm vacuum hose with a small bracket mounted to the strut tower or firewall.
💡 Quick tip:
Many cheap versions of this solenoid are clones of the MAC 3-port valve, which is the gold standard in boost control. They work fine for most builds, but the genuine MAC units tend to last longer under heat and vibration.
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