Exhaust Gas Oxygen Sensor

The EGO1 (Exhaust Gas Oxygen) sensor is a four-wire sensor that provides a very accurate output voltage which is directly correlated with air/fuel ratio. It is an ideal sensor for use with the ARM1 (Air/Fuel Ratio Meter). The EGO1 features an internal heater which assures accurate readings soon after engine start. The EGO1 also features a signal ground which provides accurate readings through the driving cycle.

The IAT1 Intake Air Temperature sensor is often used to replace the stock IAT sensor when MAF (Mass Air Flow) kits are installed. On many air flow meter (AFM) cars, the IAT sensor is internal to the AFM. When the AFM is replaced by the MAF sensor, the stock IAT sensor is removed. The IAT1 replaces the stock IAT sensor and can improve cold start performance. It is generally installed in the stock air box in front of the air filter. The IAT1 comes with a connector and nut to hold it in place.

MAF Sensors

Split Second is your source for free flowing Mass Air Flow sensors (MAF). These flow sensors are a durable light weight aluminum construction. By removing the restrictive stock Air Flow Meter (AFM), Karman Vortex, or Plunger type, air flow sensor and replacing it with a larger free flowing MAF sensor you are able to increase your horsepower. MAF are sized to your engine’s potential. If you have any questions on which MAF sensor is best suited for your engine feel free to call a Split Second representative for help.

MAF 3.0

The MAF 3.0 is compatible with engines making up to 300 hp. It has a round inlet and outlet. Both are designed to mate to a tube and be secured with a hose clamp. Some of its critical dimensions are:

Overall length	120 mm (4.73")
Inlet O.D.	89 mm (3.50")
Inlet I.D.	80 mm (3.15")
Outlet O.D.	77 mm (3.03")
Outlet I.D.	73 mm (2.87")

MAF 3.5

The MAF 3.5 is compatible with engines making up to 450 hp. It has a flanged inlet and round outlet. The inlet is designed to be mounted to a flat surface, usually an air box. The round outlet is designed to mate to a tube. Some of its critical dimensions are:

Overall length	105 mm (4.14")
Inlet I.D.	92 mm (3.62")
Outlet O.D.	90 mm (3.54")
Outlet I.D.	84 mm (3.31")

MAF 4.0

The MAF 4.0 is compatible with engines making up to 650 hp. It has a flanged inlet and round outlet. The inlet is designed to be mounted to a flat surface, usually an air box. The round outlet is designed to mate to a tube. Some of its critical dimensions are:

Overall length	105 mm (4.14")
Inlet I.D.	98 mm (3.86")
Outlet O.D.	101 mm (3.97")
Outlet I.D.	95 mm (3.74")

MAF 3.5 Adapter

The MAF 3.5 Adapter is available to convert the flange to a round inlet suitable to mate to a 4" ID tube.

MAF Harness

The MAF Harness mates with both the MAF 3.0 and MAF 3.5 and provides all required electrical connections. Its overall length is 8’. The wire assignments are as follows:

RED	Switched battery positive
BLACK	Power ground
BROWN	Signal ground
GREEN	Voltage output

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Split Second
1949 East Deere Ave. Santa Ana, CA 92705
TEL: (949) 863-1359 FAX: (949) 863-1363