Sensors
Haltech MAP Sensors

A Haltech MAP sensor (manifold absolute pressure) provides instantaneous pressure information to the electronic control unit (ECU) from the intake manifold - the amount of boost or vacuum in the intake manifold. This is necessary to calculate air density and determine the engine's air mass flow rate or in other words engine load. Engine load is used as a reference for all base fuel and ignition maps.

1 Bar Map Sensor
A 1 bar MAP sensor is capable of reading intake pressures below or equal to atmospheric pressure, for this reason a 1 bar MAP sensor is suitable only for naturally aspirated engines (ie not turbo or supercharged).

2 Bar Map Sensor
A 2 bar MAP sensor is capable of reading intake pressures up to 1 bar of positive pressure above atmospheric (otherwise known as boost). This is equivalent to around 14.7psi of boost or 100kpa of positive pressure. This sensor is suitable for turbocharged or supercharged vehicles running 15psi of boost or less.

3 Bar Map Sensor
A 3 bar MAP sensor is capable of reading intake pressures up to 2 bar of positive pressure above atmospheric (otherwise known as boost). This is equivalent to around 29.4psi of boost or 200kpa of positive pressure. This sensor is suitable for turbocharged or supercharged vehicles running between 15psi and 30psi of boost.

Haltech Air Temperature Sensor

The Haltech intake Air Temperature Sensor (ATS) provides instantaneous intake air temperature information to the Electronic Control Unit (ECU). The ATS is a critical component of the engine management system as air temperature directly effects air density (as air gets hotter it gets less dense). The Haltech ATS is made to OEM specifications and couples with a weatherproof wiring connector.

An intake Air Temperature Sensor should be used with all engine configurations.

The Haltech Air Temperature Sensor includes plug and pins.

Haltech Throttle Position Sensor

A Haltech Throttle Position Sensor (TPS) is a device that tells the ECU how far open or closed the throttle butterfly is, and how quickly the throttle is opening or closing. The Haltech TPS connects to the throttle shaft via a D shaft keyway. The TPS is particularly useful for determining additional fuel enrichment as the throttle is opened quickly (throttle pump), it is also very important in performance applications where Nitrous Oxide is being injected into the engine. A TPS can also be used to help improve fuel economy and engine efficiency as the engine decelerates. The Haltech TPS is made to above OEM specifications and uses a weatherproof 3 pin wiring connector.

A TPS should be used with all engine configurations.

The Haltech Throttle Position Sensor includes plug and pins.

Haltech 4 Wire Oxygen Sensor

The Haltech 4 Wire narrow band Oxygeny sensor (o2 Sensor) is placed in the exhaust stream and can detect if an engine is running rich, lean or at a stoic metric air/fuel ratio. The Haltech 4 wire O2 sensor is great for fuel economy on highway runs or cruising around town where the ECU can run in “closed loop” mode.

A 4 wire O2 sensor is not a necessity for all engines however if fuel economy is on your list of priorities then it’s a must have item.

The Haltech 4 Wire Oxygen Sensor couples with a weatherproof 3 pin connector.

Haltech Hall Effect Sensor

The Haltech Hall Effect sensor has been in production for a number of years and it has been
a popular item due to it’s ability to be able to generate both home and trigger signals from the
one sensor.

The S3 and S4 sensors are used in conjunction with rare earth magnets which must be mounted in non-ferrous surrounds. It is vital to use Haltech supplied rare earth magnets. You may buy cheaper rare earth magnets at your local electronic store but there are many different types of rare earth magnets made from different materials and with greatly differing properties. Some magnets don’t have the required magnetic properties and others will fail at higher temperatures. Others will work correctly at first but will fail over time, particularly at high temperatures. The rare earth magnets supplied by Haltech are carefully chosen for their magnetic and temperature properties to give a long life even if operated at fairly high temperatures.

Haltech Rare Earth Magnets

Haltech Rare Earth Magnets (REM) are extremely strong for their size and have the highest resistance to demagnetisation of any permanent magnet known to man.
Haltech REM are rated to the highest temperature you can get which makes them ideal for use in an automotive application - beware these suckers are strong!
Haltech REM are polarised and designed to be used exclusively with Haltech's own S3 and S4 Dual Channel Hall Effect Sensors.