How to install a prosport boost gauge

Written by alexander eliot
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Turbocharged engines are equipped with a turbo and intercooler system that forces pressurised air into the engine cylinders, substantially increasing torque and horsepower output. You can make sure the turbocharger is operating reliably and at its optimum level of performance by installing a boost gauge in your vehicle, such as those manufactured by Prosport. Installing this device will let you monitor the turbocharger's performance under normal driving operation. Tasks such as peak boost tuning and boost leak troubleshooting will be much easier to accomplish by monitoring the Prosport boost gauge readout.

Skill level:
Moderately Challenging

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Things you need

  • Prosport boost gauge kit
  • Gauge pod
  • Fuse puller
  • Fuse tap
  • Electrical tape
  • Phillips-head screwdriver
  • Wire strippers
  • Scissors

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Instructions

  1. 1

    Disconnect the vehicle battery cables before installing your boost gauge, since most Prosport boost gauges require splicing into the stock vehicle electrical system to power the gauge face lighting feature.

  2. 2

    Install the boost gauge mounting pod. There are numerous universal gauge pods available from aftermarket manufacturers that will accept your Prosport boost gauge. These generally install via Phillips-head screws onto the interior A-pillar, dashboard or steering column cover. Since gauge pod installation procedure varies depending on the manufacturer and design of the pod, refer to the installation diagram for your particular gauge pod when mounting it.

  3. 3

    Fit the Prosport boost gauge into the front of the gauge pod, routing its pressure line and electrical wires out of the back of the pod. Secure the gauge in the pod by threading on the supplied gauge pod face.

  4. 4

    Locate the interior fuse box, generally mounted above the driver side foot well. Remove the plastic cover, and use the layout diagram on the cover to locate the stock headlight fuse. This is the best fuse to tap for powering your Prosport boost gauge, since it will allow the gauge lighting face to turn on and off with the stock headlights.

  5. 5

    Use a fuse puller tool to gently remove the stock headlight fuse and replace it with a fuse tap. Route the boost gauge lighting wire to the fuse tap location. Use wire strippers to remove approximately 1/2-inch of insulation from the end of the lighting wire, and insert the exposed end firmly into the fuse tap wire connection. Further secure the connection by wrapping it with electrical tape.

  6. 6

    Locate any of the Phillips-head screws mounted into the vehicle chassis near the fuse box, often used to secure the fuse box itself. These are convenient grounding sources for your Prosport gauge. Loosen the screw until it is sticking several threads out of the chassis, route the boost gauge ground wire to the screw and wrap the exposed end of the ground wire around the neck of the screw. Refasten the screw into the chassis, making sure the ground wire is tightly secured by the head of the screw.

  7. 7

    Tuck excess boost gauge wiring out of the way, such as beside the fuse box, and secure it with electrical tape. Replace the plastic fuse box cover.

  8. 8

    Route the boost gauge pressure line into the engine bay by feeding it through the hole in the firewall used for the stock vehicle wiring harness. Generally there are multiple stock wire passages through the firewall, the most convenient one being accessible from the driver side foot well area. Feed all of the excess boost gauge pressure line into the engine bay so that it is not hanging loose in the foot well area.

  9. 9

    Use scissors to cut the throttle body vacuum pressure line in half. This is the rubber line that connects the throttle body to the rest of the turbo vacuum line system. Connect each end of the cut vacuum line onto the T-connector supplied with your Prosport gauge. Route the boost gauge pressure line to the T-connector, and slide it to the remaining connection. Make sure the vacuum lines are securely connected to the T-connector to avoid boost leaks.

  10. 10

    Reconnect the vehicle battery cables. Start your car and check that the gauge properly reads boost pressure. Turn the vehicle lights on and off to make sure the boost gauge lighting wire is properly connected.

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