Custom Modified Air Fuel Ratio Meter - High Turbo Applications

An accurate air Fuel Ratio Meter is an absolute must if you are doing any kind of fuel related performance upgrades to your car. Such as Supercharging, Increasing Turbo Boost Settings, Adding Boost Controllers etc. This unit takes the output from your existing Car's Oxygen Sensor and displays the results on 10 LEDs. It lets you know whether your car is running at it's optimum from an Air Fuel Ratio perspective. You can mount the LEDs anywhere you like. They can be fitted right into the car's dash board. The complete circuit board is so small it can easily be concealed. This Meter used in combination with our Fuel Injector Duty Cycle Meter (Also available and described in another area of this site) gives you all the information you need to ensure a perfectly tuned Air Fuel System. In addition they look great on your car's dash.

This Modified Air fuel Meter is calibrated to read the following O2 Sensor Voltages:

• 0.63v - 0.99v - 0.04v Per Indicator 10 Indicators (Modified Air Fuel Meter)

Please refer to the chart at the bottom of this page for detailed information on the functionality.

If you are not handy with a soldering iron, you can order the complete unit in a small slim enclosure that can be attached to your dash with double sided tape.

Custom Modified Gauges are also available on request for Turbo Applications. You can select any voltage you like, with as many indicators as you like.  The Possibilities are endless. Please email for details Here are comes examples:

• 0v - 0.9v - 0.09v Per Indicator (This is the Standard Unit)

• 0.87v - 0.99v - 0.04v Per Indicator 4 Indicators (Modified Air Fuel Meter)

• 0.55v - 1v - 0.05v Per Indicator 10 Indicators (Modified Air Fuel Meter)

• 0.90v - 1v - 0.05v Per Indicator 4 Indicators  (Modified Air Fuel Meter)

• 0.58v - 0.94v - 0.04v Per Indicator 10 Indicators (Modified Air Fuel Meter)

• 0.78v - 0.98v - 0.02v Per Indicator 10 Indicators (Modified Air Fuel Meter)

Here is a nice photo of the finished tachometer mounted in an Audi S4 the cluster ready to go. If you click on the photo you will see it in action.

Sample Tachometer Installations in the Audi S4 Cluster, Click on photo for In-Action Video

This unit is available in 3 configurations as follows, just click on the title(s) to order:

• Modified Air Fuel Ratio Meter Complete in ABS Box ($70.00)
  This is a Custom made completely finished Air Fuel Meter mounted in a convenient compact black enclosure approximately 3.1" x 1.6" x .7". The 10 Indicators can be ordered in the size and color combination of your choice comprising of 3mm or 5mm Colored Indicators, 3mm Clear Indicators, in combinations of Red, Green Amber & Yellow LEDs. The default selection is; 3 Red, 3 Green, 2 Amber & 2 Yellow LEDs. It comes complete with simple installation and operation instructions. All you have to do is find a suitable location for the meter, wire up the power and Oxygen (O2) Sensor signal wire and your done! The actual enclosure may differ slightly from the photos. Here are some examples of completed units.

Sample of Unit using 5mm Colored Indicators

Sample of Similar Unit using 3mm Colored and Clear (Colored When Lit Up) Indicators

• Dual Modified Air Fuel Meters, Two Independent Meters, in One Enclosure ($140.00)
  This is a Custom made completely finished Dual Air Fuel Meter (2 Independent Meters) mounted in one convenient compact black enclosure approximately 3.1" x 1.6" x .7". The 20 Indicators can be ordered in color combination of your choice comprising of 3mm Colored Indicators, 3mm Clear Indicators, in combinations of Red, Green Amber & Yellow LEDs The default selection is; 3 Red, 3 Green, 2 Amber & 2 Yellow LEDs. It comes complete with simple installation and operation instructions. All you have to do is find a suitable location for the meter, wire up the power and Oxygen (O2) Sensors signal wires and your done! The actual enclosure may differ slightly from the photos. Here are some examples of completed units.
  
  This unit is specifically designed to monitor both banks of a V6 or V8 or V10 engine so you can compare readings on each bank.

Sample of a Dual Units for Monitoring both Banks of a Vxx Engine, 0.63v - 0.99v, 10 Indicators per Bank
 

• Custom Modified Air Fuel Ratio Meters. (Price Depends on configuration)
  This is a Custom made completely finished Modified Air Fuel Meter mounted in one convenient compact black enclosure approximately 3.1" x 1.6" x .7". The Indicators can be ordered in color combination of your choice comprising of 3mm Colored Indicators, 3mm Clear Indicators, in combinations of Red, Green Amber & Yellow LEDs The default selection is; 3 Red, 3 Green, 2 Amber & 2 Yellow LEDs. It comes complete with simple installation and operation instructions. All you have to do is find a suitable location for the meter, wire up the power and Oxygen (O2) Sensors signal wires and your done! The actual enclosure may differ slightly from the photos.

Custom Units can be configured to you own voltage specifications. The following are examples but not limitations:

• 0v - 0.9v - 0.09v Per Indicator (This is the Standard Unit)

• 0.63v - 0.99v - 0.04v Per Indicator 10 Indicators (Modified Air Fuel Meter)

• 0.87v - 0.99v - 0.04v Per Indicator 4 Indicators (Modified Air Fuel Meter)

• 0.55v - 1v - 0.05v Per Indicator 10 Indicators (Modified Air Fuel Meter)

• 0.90v - 1v - 0.05v Per Indicator 4 Indicators  (Modified Air Fuel Meter)

• 0.58v - 0.94v - 0.04v Per Indicator 10 Indicators (Modified Air Fuel Meter)

• 0.78v - 0.98v - 0.02v Per Indicator 10 Indicators (Modified Air Fuel Meter)

Sample of a Quad Unit for Monitoring all 4 Cylinders of a Race Car, 0.87v - 0.99v, 4 Indicators per Bank

0.63 - 0.99v Modified Air Fuel Ratio Chart

 

LED No.	Voltage	Description	A/F Ratio
1	0.63v	Very Lean	14.6:1
2	0.67v	Very Lean	14.55:1
3	0.71v	Lean (Vacuum)	14.5:1
4	0.75v	Lean (0 PSI)	14.45:1
5	0.79v	Low Boost	14.4:1
6	0.83v	Boost (2 - 6 PSI)	14.1:1
7	0.87v	Boost (6 - 9 PSI)	13.5:1
8	0.91v	High Boost (9 - 12 PSI)	13.2:1
9	0.95v	High Boost (+12 PSI)	13.1:1
10	0.99v	Very Rich	12.5:1

Please note: A/F Ratios indicated are approximations as this unit is so sensitive

Payment Methods:

PAYPAL and Money Orders are the ONLY method of payment accepted. Please use PAYPAL to pay with your credit card.