4-Port Boost Control Solenoid (BCS)

$60.00

High-quality MAC 46A-AA1-JDBA-1BA 4-port  boost control solenoid with plug and play connector for the Cortex EBC wiring harness.  If you are looking to achieve the widest range of possible boost levels or need to combat boost taper caused by exhaust manifold back pressure a 4-port boost control solenoid is your best option.

While a 3-port BCS can only be used to control pressure application to either the top or bottom ports of an external wastegate, a 4-port BCS can be used to switch pressure application between both wastegate ports.  This allows the wastegate valve to be forced shut even when significant exhaust pressure is trying to push it open.

When the solenoid is not activated boost pressure is applied to the bottom port the wastegate and the top port is connected to atmosphere.  This will allow the wastegate valve to be pushed open once sufficient boost has been built to overcome the pressure of the spring inside the wastegate.

When the solenoid is activated the bottom port of the wastegate is connected to atmosphere and boost pressure is applied to the top port of the wastegate.  This allows boost pressure to act in conjunction with the wastegate spring to hold the wastegate valve closed.  Because a 4-port boost control solenoid is able to apply boost pressure to the top port only of an external wastegate it is possible to increase boost substantially above wastegate spring pressure.  Most applications will be able to create pressures 4 times higher than wastegate spring pressure.  On some setups it is possible to increase boost above wastegate spring pressure by 7 times or more.

Specs:
Coil Resistance: 25 Ω
Current Draw @ 12 V: 450 mA
Power Dissipation @ 12 V: 5.4 W
Thread Size: 1/8″ NPT