Haltech F10 - Manual (Page 55)

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into the ECU’s memory.
It is not necessary or advisable to perform this reset regularly. It should only be done if
the vehicle’s regular place of garage is moved or if problems are suspected in the barometric
correction. For example, if an engine is tuned at sea level but is intended to be used mainly at
a higher altitude, then the reset should be performed once it reaches its new regular location.
After that, the automatic reading done at start up will be sufficient for the F10 to apply
barometric compensation and M ethod 2 is complete.
Method 1
M ethod 1 is the most complex and allows continuous barometric pressure readings to be taken
and fuel injection times can be adjusted based on these readings. This can only be done if an
external 1 bar M AP sensor (left open to the atmosphere) is connected to the F10 ECU.
The connection differs depending on the method of load sensing: Throttle Position or M AP
sensor. For this reason, M ethod 1 has been broken into two smaller sections.
Sensing Engine Load by TPS
When measuring engine load by Throttle position a 1 Bar MAP Sensor (left open to
atmosphere) can be connected to either the MAP sensor input or the Spare A\D input on the
wiring loom.
- If the M AP sensor is connected to the M AP sensor input ensure that the
Spare Input function, in the Input/Output Set-up, is not set to “Baro.
Sensor”. The F10 will automatically recognise the 1 Bar M AP sensor and
no further configuration is required.
- If the MAP sensor is connected to the Spare A\D input ensure that the
Spare Input function, in the Input/Output Set-up, is set to “Baro. Sensor”.
The F10 will perform barometric compensation using th Spare A\D.
Sensing Engine Load by MAP Sensor
When measuring engine load by M AP sensor a 1 Bar MAP Sensor (left open to atmosphere)
can be connected to either the MAP sensor input or the Spare A\D input on the wiring loom.
Ensure that the Spare Input function is set to “Baro. Sensor”. The F10 will perform
barometric compensation using th Spare A\D.
To access the Input/Output Set-up page press Alt – S to open the Set-up menu then scroll to
the Input/Output Set-up menu item and press enter.
Completing Method 1
The F10 software contains a barometric compensation map that allows the fuel delivery to be
reduced as the barometric pressure falls. As a final step to complete M ethod 1, you have the
ability to adjust a dedicated barometric correction map. The fuel can be trimmed
± 50%.
When sensing load by Throttle Position, the Barometric Correction M ap should look similar