Hondata 4 Port Boost Control Solenoid

The Hondata 4-port boost control solenoid allows your S300 or Kpro Hondata  to control boost levels through the software. Using the 4 port solenoid instead of the older style 3 port solenoid provides better boost control on both high and low boost applications. This is achieved by controlling pressure to both the top and bottom side of the wastegate. This allows better low boost level control without sacrificing high boost control.   Boost Solenoid Turbo Plumbing Diagram & Picture Diagram: Port A = Top of wastegate Port B = Bottom of wastegateIN = Turbo vaccum / boost reference EX = Vent / Breather Fitting      Advantages of the 4 port vs. 3 port boost solenoid: - Better spooling for increased mid-range power- More accurate duty cycle control As with the standard Hondata boost control solenoid, the solenoid is normally closed so that if it were to ever fail you will run off the wastegate spring and not over-boost and damage your engine. Includes: Hondata 4 port boost control solenoid 3 air line fittings 1 breather fitting Compatable with: - Hondata S300 (with a PWM equipped ECU)- Hondata K-Pro- Hondata FlashPro