SpeedFactory Racing 4-Port Boost Control Solenoid Kit (External Wastegates Only) regular We've made improvements and fixed

We've made improvements and fixed the parts that break so that you can make better and more consistent shifts

Laser-etched SpeedFactory Racing logo

This is a maximum boost at 100% duty/normally closed solenoid

D series - Lash measured at the valve tip needs to be set to 0

re-using your factory O-Ring

SpeedFactory Racing 4-Port Boost Control Solenoid Kit (External Wastegates Only) regular We've made improvements and fixedThe SpeedFactory Racing 4 Port Boost Control Solenoid Kit allows precise boost control with a PWM (pulsewidth modulation) signal from a source (Engine Control Module or Electronic Boost Controller). This solenoid can raise the boost level as high as 6 7 times the spring pressure of the wastegate and offers very precise control at very high boost levels. The 4 Port Solenoid also allows you to use much lower wastegate spring pressures for better boost