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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
What makes the FAST™ Air/Fuel Meter work so well
:
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Our single or dual oxygen sensor kits give you accurate air/fuel ratios for tuning your engine to
perfection.
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Single sensor version that can be upgraded later to the two sensor technology. Simply purchase
an additional cable and sensor, plug it in, and the air/fuel meter is ready to go!
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With the FAST™ Air/Fuel Meter, you can read two sensors individually or have them averaged
together for super accurate readings of the engine’s true air/fuel ratio.
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Simple, built-in data-logger doesn’t require you to download to a laptop/computer.
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Advanced 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.
Quick Start Reference Guide
:
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sensor location:
For maximum accuracy, install the oxygen sensor just upstream of the catalytic
converter. You can install the sensor after the converter, but the readings will register slightly leaner
than if measured before the converter. Do not install the oxygen sensor in the 6 o’clock position in the
exhaust pipe. If this is done, condensation may puddle in the sensor, causing corrosion and damage to
the sensor. Do not install the O
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sensor closer than 20 inches from the cylinder head flange, the excess
heat can cause damage to the sensor. It is preferred that the sensor be installed in or after the collector
area.
Use of leaded fuel:
The use of leaded fuel will significantly reduce the lifespan of the oxygen sensor.
Depending on the leaded fuel that is used, the sensor will provide 50-500 hours of accurate reading.
When the sensor begins to read inaccurately, simply replacing the sensor with a new one will return the
air/fuel meter to perfect operating condition.
Un-powered sensor:
When an engine is running and the sensor or sensors are installed in exhaust
pipe, for maximum sensor life, it is advisable to be in the active air/fuel display mode. When in the
active air/fuel display mode, power is applied to the heating element of the oxygen sensor, and this
helps to reduce the build-up of exhaust deposits on it. If the sensor is not powered-up, exhaust deposits
may build-up on the sensor element and reduce its accurate life expectancy.
Stand-by power consumption:
When the FAST™ Air/Fuel Meter is powered down, a small amount
of current is required to maintain its standby. If the unit is in a vehicle that will not be run in the next
15 days, it is recommended to simply unplug the unit from the cigarette lighter.
Installation Instructions
:
1.
Install threaded sensor bushing
. For maximum accuracy, install the oxygen sensor just
upstream of the catalytic converter. You can install the sensor after the converter, but the
readings will register slightly leaner than if measured before the converter. Do not install the
oxygen sensor in the 6 o’clock position in the exhaust pipe. If this is done, condensation may
puddle in the sensor, causing corrosion and damage to the sensor. Mark the spot where you
would like to install the threaded sensor bushing, drill a .750 diameter hole, and weld the
bushing centered on the hole. If you do not have access to a welder, any competent exhaust
