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Holley Boost Controll Solenoid Valve (HO557-200) HO557-200

Holley Boost Controll Solenoid Valve (HO557-200)

3 Port Valve
SKU: HO557-200
$374.80 - $374.80
$374.80
$374.80 - $374.80
$374.80
+ GST
Stock Status: ⚠️ Low stock — contact before purchasing

WASTEGATE BOOST CONTROLLER

3 Port Valve

Part Number: HO557-200

Holley’s 3 port boost control solenoid is designed for optimal performance when using the boost control function of Holley EFI. Some setups require two solenoids and some require one. The solenoid is driven by a Pulse Width Modulated (PWM) output of the ECU. It is advised NOT to use the PWM+ outputs on an HP ECU, but rather use the PWM- Outputs. If you have a Dominator ECU, either use the PWM- outputs, or use a PWM+ output on the J2B connector.