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Part #170450 

Revised 3/08/07 

FAST™ 

3400 Democrat Rd. 

Memphis, TN  38118 

Phone:  (901) 260-3278 Fax:  (901) 375-3408 

www.fuelairspark.com 

shop can install the threaded bushing for you. It is still advisable to locate where you would like 
the sensor mounted, mark it, then let the shop drill the hole and weld the bushing in place. 

 

2.

 

Run sensor cable to interior of vehicle.

 Attach the cable’s sensor connector to the oxygen 

sensor and then route the cable to the interior of the vehicle. 

 

3.

 

Connect cable to power and display.  

Plug in the cigarette lighter power adaptor and connect 

it to the sensor cable. Plug in the sensor cable to the side of the display housing. The unit 
should automatically power-up at this point. 

 

4.

 

Follow the on-screen menu options. 

Select the sensor options, wait for the unit to warm-up, 

and then read your air/fuel ratio. There are several sensor options to choose from. Single sensor 
mode will measure only one sensor. Dual sensor mode will measure two sensors. In dual sensor 
mode you can read these sensors individually (Fig. A) or as a combined average.

 

 

 
 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
Operational Features & Descriptions 

 

Data Logging

 

1.

 

In any live air/fuel display screen, you may press the up-arrow button (the button next to the L 
on the display screen) to begin recording your air/fuel ratio (Fig. A). When pressed, the L will 
begin to flash, indicating that you are now recording. The FAST™ Air/Fuel Meter contains 
enough memory to record up to 50 minutes of data in single sensor mode and up to 25 minutes 
in the dual sensor mode. When you are finished recording, simply press the up-arrow button 
(L) again. The L will stop flashing and your data log is saved. If you press the up-arrow button 
(L) again, the old log is erased and a new log will be created. 

 

Fig. B 

Analog Signal Output 
Wire (GREY) 

Signal Ground Wire 
(BLACK) 

Fig. A 

The “up-arrow” button next to the “L” starts 
the data logger recording the air/fuel data 

The “down-arrow” button next to the “P” 
starts the data logger playback mode 

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