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FAST™ Wide-Band Dual Sensor Air/Fuel Meter
Stop guessing and start tuning for additional horsepower and reliability with the FAST™ Dual Sensor Air/Fuel Meter.



Proper engine tuning is vital to achieving maximum performance and avoiding costly component failures. Until now digital air/fuel meters have only offered single sensor measuring capability. This meant engine tuners were only able to monitor the air/fuel ratio in one side of the engine, while being left to play a guessing game with the other engine bank. Now there is a way to eliminate the unknown, allowing you to tune with confidence and complete accuracy.

FAST™ has developed an easy to use Dual or Single Sensor Air/Fuel Meter that delivers the complete story about your engine’s tuning. you will now haave the same technology that tuners have, and the power to read two wide-band O2 sensors individually or average them together for super accurate readings of the engine’s true air/fuel ratio.

Beyond the innovative dual sensor capability, the FAST™ Dual Sensor Air/Fuel Meter delivers all the features that tuners have come to expect, plus several enhanced capabilities, in the easiest to use format of any digital air/fuel meter ever developed. One such feature is built-in data logging capability that plays back recorded information on a lighted, full graphical display screen, unlike other units that require downloading to a computer. Additional standard features include outputs for external data loggers, digital gauges, as well as a narrow-band simulator function that allows you to feed your engine’s computer a factory signal while using the wide-band sensor for air/fuel measurement.

    FAST™ Dual Sensor Air/Fuel Meter Feature

  • Dual wide-band O2 sensors measure air/fuel ratio in both engine banks simultaneously or average them together for precise tuning of carburetor jetting or EFI profiles

  • Features include built-in data logger with on-screen playback (no laptop required), outputs for external data loggers & digital gauges and a narrow-band simulator function

  • Affordably priced single sensor version can be easily upgraded to dual sensor unit; features field-flashable capability for downloading future updates

  • Built-in calibration and quick start-up deliver A/F readings in under a minute; kit comes complete with everything needed

  • Lighted, full graphical display makes it the easiest to use unit available; perfect for race, street and dyno-cell applications
Part # Application Price
CCA-170401
    FAST
  • Wide-Band Single Sensor Air/Fuel Meter
$ 299.95

CCA-170402
    FAST
  • Wide-Band Dual Sensor Air/Fuel Meter
$ 399.95

CCA-170536
    FAST
  • Air/Fuel Meter RPM Module Kit
$ 149.95

CCA-170493
    FAST
  • Air/Fuel Meter Interior Mount Kit
$ 59.95

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Wideband Air/Fuel Ratio Gauges Now Available from Auto Meter!
- Now Featuring Seven (2-1/16) Gauge Styles! -

Auto Meter announces the release of Wide Band Air Fuel Ratio Gauges in popular Cobalt, C2, NV, Ultra-Lite, Sport Comp, and Phantom gauge designs as a superior tuning aid for performance enthusiasts looking to wring every last ounce of power from their rides.

Auto Meter’s Wide Band gauges are standard 2 1/16” (52mm) size for extreme mounting versatility and come as a complete self-contained unit with a Bosch sensor and no external interface modules required.

Capable of displaying either Air/Fuel Ratio or Lambda, Auto Meter Wide Band gauges utilize a 30 LED array and digital LED display for extreme clarity and precise readings.

    Additional Features Include:

  • Automatic brightness control

  • 0-4v Analog output to feed a data acquisition unit or engine management system

  • Adjustable radial array sensitivity and stoichiometric point to accommodate alternate fuel types and provide optimal real time monitoring

  • Easy to use two button interface for programming

  • Peak recall to capture lean out conditions during a run

  • Warning function to alert driver to critical conditions and help avoid costly engine damage


  Wideband Air/Fuel Ratio Gauges, 2 -1/16" Diameter Gauges
Part # Image Discription Price
AUT3378 Click-On Image For Larger View
    Gauge, Sport-Comp Series
    (Silver bezel - black face)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter Sport-Comp Gauges - CLICK-HERE
$ 349.95

AUT4378 Click-On Image For Larger View
    Gauge, Ultra-Lite Series
    (Silver bezel - Silver face)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter Ultra-Lite Gauges - CLICK-HERE
$ 349.95

AUT5778 Click-On Image For Larger View
    Gauge, Phantom Series
    (Black bezel - White face)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter Phantom Gauges - CLICK-HERE
$ 349.95

AUT6178 Click-On Image For Larger View
    Gauge, Cobalt Series
    (Chrome bezel - black face - cool blue light)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter Cobalt Gauges - CLICK-HERE
$ 369.95

AUT6478 Click-On Image For Larger View
    Gauge, Nexus Series
    (Silver bezel - black face)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter Nexus Gauges - CLICK-HERE
$ 399.95

AUT7178 Click-On Image For Larger View
    Gauge, C2 Series
    (Chrome bezel - White face - cool blue light)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter C2 Gauges - CLICK-HERE
$ 369.95

AUT7378 Click-On Image For Larger View
    Gauge, NV Series
    (Chrome bezel - White face - cool green light)
  • Includes high-quality Bosch wideband O2 sensor
  • Display data in Lambda or numerical A/F ratio
  • User programmable range Peak recall/memory
    1. 10:1 to 20:1 AFR Range for Gasoline Applications
      Adjustable for Alternate Fuel Types (Ethanol, Methanol, Propane, CNG)
    1. 6:1 to 18:1 AFR Range for Alternate Fuel Types

    For our complete Line of Auto Meter NV Gauges - CLICK-HERE
$ 369.95

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We offer the best price

SNIPER TUNING Wide-Band Air/Fuel Meter

Regardless of what some people may claim, it is impossible to properly tune a fuel injection system on a modified engine without some means of exhaust gas analysis. Sniper offers the AF-5000 as a low cost alternative to expensive systems. Conventional (narrow-band) exhaust gas oxygen sensors have been widely used in automotive applications since 1981. Conventional sensors have one to four wires and can only sense air/fuel ratio over a relatively narrow 14.5 to 15.0 range. They are intended to be used with 3-way catalytic converters that require operation near the stoichiometric point (14.7 air/fuel ratio). The range of narrow-band sensors is inadequate for performance tuning. While originally developed for lab and specialized automotive applications, wide-band sensors are ideal for tuning. The 5-wire Bosch LSU 4.2 sensor used with the AF-5000 operates over a range of 10.3 to infinite air/fuel ratio.

    The AF-5000 features built-in data logging. This data logging capability greatly facilitates engine tuning and diagnosis of driveability issues. The AF-5000 can store data up to 2 hours of operation. You can use our WEGO Log software to download and display this data on a chart recorder type screen.

    Available data includes:
    1. AFR (air/fuel ratio)
    2. RPM
    3. 0-5V analog.
S/P-A/F5000

$ 329.99

Additional Sniper AFR features include:
  • Complete air/fuel ratio metering system with built-in data logging. Includes WEGO II Wide-Band Exhaust Gas Oxygen Sensor Interface, Bosch LSU4.2 5-wire wide-band oxygen sensor, 18x1.5mm weld nut for mounting sensor on exhaust pipe, and software on CDROM
  • Versatile tuning aid for all carbureted and fuel injected engines displays AFR (air/fuel ratio) and logs over 2 hours data including AFR, engine RPM, and a spare 0-5V analog input for sensors such as throttle position or manifold pressure.
  • Can be used for on-road or dyno testing.
  • Suitable for automotive, motorcycle, and other small engine applications.
  • Highly accurate with less than ±0.10 AFR error over 10.3 - 19.5 AFR range.
  • Easy free-air calibration procedure corrects for sensor aging effects.
  • Red LCD display with backlight provides great readability in all conditions ranging from bright sunlight to total darkness.
  • Compact size: 3.7"L x 1.7"W x 0.75"H.




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