Bi-directional Vacuum & Boost Monitor

with Integrated Sensor

• PSI and Bar versions available
• Ranges:
  • PSI model: < -30 in. Hg to > 50 PSI
  • Bar model: < -1 Bar to > 4 Bar
• Resolution:
  • PSI model: 1 PSI
  • Bar model: 0.1 Bar
• Integrated semiconductor sensor (no external sensor required)
• Park-light dimmer
• Bi-directional 12-segment bargraph AND 3-digit display
• NOTE: click on photo above for explanation of the bi-directional operation
• Bargraph peak mode
• User-settable bargraph scale
• User-settable day and night intensities (9 levels each)

• Bezel: natural machined aluminum
• Display: Bright Red or Ice Blue

• 2-1/16"(52mm) mounting diameter

• None (built into gauge)

•   Mechanical specs
•   Installation instructions

• Is this a mechanical gauge?
  No, this is an electronic gauge with the sensor mounted inside the gauge.
  
  
• Why is the sensor inside the gauge?
  Rather than using a diaphram-type sensor (as with oil pressure sensors),
  we use a piezo-electronic sensor which responds faster and is more
  accurate. However, it cannot handle the heat that diaphram-type sensors
  can, so we moved it away from the engine bay. This also allows us to easily
  monitor the temperature of the sensor for temperature-compensating the
  output, resulting in much better accuracy.
  
  
• How exactly does the bi-directional bargraph work?
  Since there is a need to clearly distinguish between vacuum (negative
  pressure) and boost (positive pressure), the gauge shows these two
  states as different directions on the bargraph. For vacuum, the bargraph
  starts on the right and grows to the left for increasing vacuum (decreasing
  pressure), and vice-versa for boost. In operation, as the intake pressure
  level increases, the bargraph gets smaller (towards the right),
  representing less vacuum, until the pressure level becomes positive. At
  that point, the bargraph switches over to start from the left and grow to
  the right, representing increasing boost pressure. This also effectively
  doubles the bargraph resolution.
  
  

• Red: V1-BOP-MR (prev model # VBP-MR): $99 (Red display, PSI)
• Blue: V1-BOP-MB (prev model # VBP-MB): $115 (Blue display, PSI)
• Red: V1-BOB-MR (prev model # VBB-MR): $99 (Red display, Bar)
• Blue: V1-BOB-MB (prev model # VBB-MB): $115 (Blue display, Bar)