Holley Boost Control Solenoids, Dual Solenoid Style, Electronic, Kit 557-201
MPN: 557-201
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RPI: 2125630
$841.13
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Australia Wide
Handling Time
7-10 Business Days Handling Time
(Prior to Dispatch)
(Prior to Dispatch)
Return Policy
No Return (Unless Manufacturer Defect)
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Unit 1/25 Bearing Road, Seven Hills, NSW, 2147
Ready-to-pickup: 7-10 Business Days*
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Holley boost control solenoids are designed for optimal performance when using the boost control function of Holley EFI. Some setups require two solenoids and some require one. They're driven by a Pulse Width Modulated (PWM) output of the ECU. It is advised NOT to use the PWM+ outputs on a Holley HP ECU, but rather use the PWM- outputs. If you have a Holley Dominator ECU, use either the PWM- outputs or a PWM+ output on the J2B connector.
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