Full-Race 4 Port MAC Boost Control Solenoid w/ Full-Race Bracket

Our 4-port boost control solenoid valve is designed for use in applications which target a clearly defined boost curve. Capable of improved boost response and in some cases with a soft WG spring – quicker spool The 4-port design works equally well in low boost applications as high boost. This differs from a traditional 3-port BCSV because it precisely directs pressure to the open and close ports of your waste-gate diaphragm. This allows much lower waste-gate spring pressure for better low gear boost control and perfect high gear, high boost control.

Full-Race 4 Port Boost Control Solenoid Features:

• A soft waste-gate spring will enable much higher boost levels
• Better spool-up and mid range power
• Better duty cycle control
• Solenoid is normally closed so that on failure you will run off the waste-gate spring only – to prevent over-boosting.
• 1/8th NPT fittings, easily adapted to AN fittings.

Full-Race 4 Port Boost Control Solenoid Compatibility:

• Ideal for use in sealed Dual Port Internal WG applications, Internal or External
• Hondata S300, K-Pro or Flashpro
• Cobb Tuning AcessPort
• All PWM modulated standalone and piggyback ECU’s will support this 4 port BCSV!

Wastegate Options:

• Turbosmart IWG-75 Twin Port Internal Wastegate Actuator
• TiAL 38mm MVS External Wastegate
• TiAL 44mm MVR External Wastegate
• TiAL 60mm V60 External Wastegate

Optional Upgrades:

• Full-Race Vacuum/Boost Block
• BorgWarner EFR Wastegate Hose Kit

External Wastegate properly plumbed to a 4port Boost Control Solenoid

Dual-port IWG (Internal Wastegate) properly plumbed to a 4 port Solenoid

Note: If you are upgrading from a 3 port solenoid, the boost control tables will need re-tuning.  4port solenoids require small duty changes, so dial down the PID tables (single digit numbers) so it is not over-reactive.