For high performance
engine tuning using 'Engine Management' technology at D.I.Y.
prices the AFS-2 offer cost effective options to Dyno/Rolling
It is now possible to accurately monitor the fuelling
characteristics of your engine while driving on road, off road,
or on the track in order to assess the calibration of your
fuel system, whether it be fuel injection or carburettor.
Using the AFS-2 lambda air/fuel ratio display unit, mounted to
the facia of your vehicle, you can check that the fuelling
requirement of your engine is correct.
WHAT IS THE AFS LAMBDA DISPLAY SYSTEM ?
It is a compact and lightweight lambda display unit and a
heated lambda (oxygen) sensor.
The display unit is finished in an attractive black textured
steel casing and features a number of LED indicators which are
colour coded to assist quick and accurate fuel calibration.
AFS-2 is a full size display for car use.
The lambda sensor is a high quality original equipment fitment
component which is connected to the display unit via a
dedicated wiring harness with system fuse.
A comprehensive instruction pamphlet is included, detailing
the fitment components with a wiring diagram and information
on how use the lambda display to your best advantage.
Completing the system is a lambda sensor mounting boss, wiring
crimp connectors and adhesive velcro mounting strips.
HOW DOES IT WORK ?
The Lambda Display System constantly monitors the air/fuel
ratio of the engine using a lambda (oxygen) sensor placed in
the exhaust system. This sensor accurately detects the amount
of free oxygen (O2) in the exhaust gases, from which the air/fuel
ratio can be calculated.
This information is normally used in 'Engine Management
Systems' to enable the electronic control unit to adjust the
air/fuel ratio to the optimum value for vehicles fitted with
The Lambda Display Meter utilises this same information
received from its own lambda sensor and indicates the air/fuel
ratio on the colour coded LED lights, ranging from rich to
lean mixtures, typically 12.5:1 to 15.0:1 A.F.R. when using
regular pump fuels.
ARE THE AFS-1 and AFS-2 SUITABLE FOR USE WITH MY ENGINE ?
They will work on virtually any 12 volt negative ground
vehicle, using regular pump petrol, methanol or propane.
Leaded fuel can be used, but it will contaminate and limit the
life of the oxygen sensor.
They are also suitable for use with rotary engines.
IS IT EASY TO INSTALL THE AFS-1 and AFS-2 ?
The sensor installation is very straight forward, you need to
drill a 16 mm (5/8") hole into the exhaust system near the
exhaust manifold and weld into position the sensor mounting
boss. The wiring harness simply connects to the lambda sensor
and display unit, with a power supply from the vehicle battery
or a switched source and a good chassis ground earth. Full
fitting instructions are supplied with the system.
WHAT DO YOU GET FOR YOUR MONEY ?
The lambda display unit is supplied as part of a complete
system which includes the following parts:
1 x Alpha lambda display unit
3 x Crimp connectors
1 x Lambda (oxygen) sensor
1 x Wiring harness and fuse
1 x Weldable sensor boss and gasket
4 x Velcro mounting strips
1 x Instruction pamphlet including wiring diagram