fast fuel systems

Air Fuel Meters
Gasoline---Alcohol---Diesel


FAST™ has developed three, easy-to-use Digital Air Fuel Meters for gasoline, diesel and alcohol based fuels (ethanol/methanol E85), with no laptop required. Available in single or dual sensor units, these meters give tuners the power to read two wide-band O2 sensors individually or average them together for maximum accuracy of the engine’s air fuel ratio reading. The FAST™ Digital Air Fuel Meters include several enhanced capabilities, including the built-in data logging capability that plays back recorded information on a lighted, full graphical display screen rather than using a laptop computer. Additional features include outputs for external data loggers, digital gauges, as well as a narrowband simulator function that allows you to feed your engine’s computer a factory signal while using the wide-band sensor for air fuel measurement.

Don't forget to join us onFacebook logo our facebook page


Gasoline Air Fuel Meters

FAST gas air fuel meter

No matter if you are running carburetion or EFI, correct air to fuel ratio tuning is essential to achieving maximum performance. With the FAST™ Digital Air/Fuel Meters, the information needed to make this critical tuning adjustment is available with more accuracy than ever before.
In addition to it's industry leading dual sensor monitoring capability, The FAST™ Dual Sensor Air/Fuel Meter has several advanced features. It's built-in data logging capability plays back logged information on the lighted, full graphical display screen, without requiring downloading to a computer. Additional features include outputs for external data loggers and gauges, and 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 and adjustments.

part# description price buy
170401 Single Sensor kit-Gasoline (12 ft cable) $327.92
170402 Dual Sensor kit-Gasoline (12 ft cable) $435.21
170501 Single Sensor Motorcycle kit-Gasoline (6ft cable) $320.79
170502 Dual Sensor Motorcycle kit-Gasoline (6ft cable) $430.59
170601 Single Sensor Dyno Cell Kit-Gasoline (22ft cable) $320.79
170602 Dual Sensor Dyno Cell Kit-Gasoline (22ft cable) $442.73
see Air Fuel Meter Accessories just below


Back To Top

Alcohol Air Fuel Meters

FAST alcohol air fuel meter

The revolutionary FAST™ Alcohol Air Fuel Meter is an easy-to-use, dual sensor, wide-band air/fuel meter that is compatible with E85, E98 and methanol fuels – the only one of its type available to the public. The FAST™ Alcohol A/F Meter features a built-in data logger that plays back realtime air fuel data on the unit’s large, backlit display screen without requiring an external computer. When connected to the optional FAST™ Air Fuel Meter RPM module, engine tuners can view engine rpm as it corresponds to air fuel meter readings for even more accurate tuning.
The FAST™ Alcohol Air Fuel Meter unit's dual oxygen sensors, allow you to monitor both cylinder banks for unprecedented tuning accuracy. This system allows you to read both exhaust sensors individually or average them together for a super accurate reading. For engine tuners on a budget, a single oxygen sensor version is available that can later be upgraded to the two-sensor technology. Advanced features include outputs for your data logging software and external digital gauges

part# description price buy
170590 Alcohol Single Sensor kit (12 ft cable) $327.92
170608 Alcohol Dual Sensor kit-(12 ft cable) $435.21
see Air Fuel Meter Accessories just below


Back To Top

Diesel Air Fuel Meters

FAST diesel air fuel meter

For years, the only device available for measuring the state of tune in a performance diesel engine was an exhaust gas temperature (EGT) gauge. While this is an important tool, it only delivers half the tuning equation. With the FAST™ Diesel Air Fuel Meter, you can check engine efficiency at wide open throttle and make adjustments to your air fuel ratio that will help draw the maximum horsepower from every drop of fuel that you burn.
Compatible with diesel and B20 blend bio-diesel fuels, the FAST™ Diesel Air Fuel Meter features a large, easy to read, backlit display screen that shows your A/F ratio in realtime. Touch of a button, and the unit’s built-in data logger records your A/F ratios for later review -with no need to download the information to an external computer. When connected to the optional FAST™ Air Fuel Meter RPM module, you can view engine rpm as it corresponds to air fuel meter readings, allowing you to focus in on the rpm range that requires additional tuning.
The FAST™ Diesel Air Fuel Meter is available in both economical, scalable single sensor and flexible dual sensor versions. The 2-sensor version allows you to measure air fuel ratios in two different locations at the same time for maximum sampling accuracy. Advanced features also include outputs for data logging software and external digital gauges. See the chart below for part numbers and accessories.

part# description price buy
170701 Diesel Single Sensor kit (12 ft cable) $327.92
170702 Diesel Dual Sensor kit-(12 ft cable) $430.70


Back To Top
AirFuel Meter Accesssories/Single & Dual Sensor Kits
-Gasoline-Alcohol-Diesel-
Part # Description Price Buy
170408 Replacement Wide Band O2 Sensor $90.96
30168 Threaded O2 Sensor Bushing (weld in) $9.16
30169 O2 Sensor Bushing Plug $10.00
170493 Air/Fuel Meter Mounting Kit $49.32
170536 Rpm module
(see note below)
$160.70
170462 replacement cable-w/powerlead-(6 ft.) $51.42
170480 replacement cable-w/powerlead-(12 ft.) $44.17
170460 replacement cable-w/powerlead-(22 ft.) $74.32
170463 replacement cable--(6 ft.) $41.84
170481 replacement cable--(12 ft.) $36.39
170461 replacement cable--(22 ft.) $69.40
170634 Wide Band Air Fuel Gauge Kit $153.85
170620 EZ clamp-on tailpipe wide band sensor mounting kit $61.70
170445 single to dual sensor air fuel meter kit $116.84

Note: the RPM module is a suggested component along with the purchase of either single or dual sensor kit--it will allow you to playback recorded information at different RPM points which will give you necessary time to study the rpm areas that need adjustments.