Which Mac Solenoid For Boost Control
Best strategy games for mac air. I’m not sure what the deal is with boost control plumbing/wiring, but it is by far the most common issue I have when tuning turbocharged cars. I get that it’s not something you can test on an un-tuned car, as you’re likely not going to be blasting off into boost to see where (and if) the gate opens. But re-plumbing wastegates isn’t something that you want to be doing while you’re paying for dyno time. So let’s get it right.
And to get it right, we’ll make sure you understand exactly how the boost control solenoid works, and how the wastegate you’re using works. First of all – let’s look at how a boost control solenoid works. As the name implies, the valve is a solenoid. Meaning it mechanically actuates when it receives 12 volts on one side, and ground on the other. Like most solenoids, polarity does not matter.
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AEM's Boost Control Solenoid is specifically manufactured for automotive applications. It is designed to resist corrosion and sticking from exposure to rich fuel mixtures. AEM's Boost Control Solenoid is pressure tested to 100 PSI and includes 1/8' NPT to 3/16' Barb fittings to reduce any chance of leaks. Hey there I am attempting to use the pwm function in Neptune with the Mac Boost Controller I purchased. I wired it into the ecu as directed and have the other going to a fused (but shared with Output 1) circut from the dash fuses.
One wire will typically get 12V switched power, shared with other ECU functions, and the other wire will go to an output on the ECU. In Motec land that would be called an AUX out, or HB out, in Haltech land that would be called a DPO. Most ECU manufacturers call their outputs something different, but you need to ensure you connect the ground side of the solenoid to an output that can be pulsed at a medium frequency (typically ~30hz), that is designed to work for boost control. Some ECUs have mandated pinouts, and some ECUs can only “switch” some outputs versus pulse width modulation, so be sure the pin you’re connecting to is acceptable. A boost solenoid typically has 3 ports. One port is always connected to one of the other two ports – this is called the “Common” port. This is important – I’ll touch on it later.
The other port will be “NC” or Normally Closed. And the final port will be “NO” or Normally Open. The common port will always pass air through to the solenoid’s NO port when no power is applied, and the NC port will be a dead end. When the valve is energized, the “NC” and common port will have a pathway for air to flow, while the “NO” port will be a dead end. MAC 3 Port Solenoid, commonly used for boost control. Photo Credit: ScoobyNet.com Now that you understand how the valve works, let’s look at how a wastegate works in both an internal and external setup, and how to properly plumb our solenoid. Firstly the simple, internal wastegate setup where the actuator has only one port.