Dual Mac Valve with Dome Sensor PNP

Add boost control to your Holley equipped vehicle with our dual Mac valve harness. The harness plugs into your power tap connector and requires 3 connections to be made to the input/output harness. The other end of the harness plugs into each 3-port Mac valve and the dome pressure sensor.

You will need to provide your own 3-port Mac valves and 3-wire dome pressure sensor. We suggest a Low Doller Motorsports PN: 8990100-0-100 oil filled 0-100 psi sensor. We include the required connectors to install on your Mac valves to be able to plug into the harness.  

The two outputs are controlled with PWM- and will need to be setup accordingly. The input from the dome senor will also need to be setup in Holley's input/output portion of the software and scaled according to the sensor you are using. 

The harness has 6' leads for the Mac valves and dome sensor. If you need a different length, please email us for a custom option.