Haltech F9A - Manual (Page 37)

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injectors, adding to their fuel flow. The point at which the F9 switches in the
secondary injectors is set via the Staging Bar Number field. Staging permits high fuel-
flow capability, but maintains accuracy and controllability at light load and idle. See
Appendix D [D.3] for more details on staging.
Staging Bar Number: This field sets the point at which the staged injectors are enabled. See
Appendix D [D.3] for more details on staging. If the injection mode is not "Staged
Injection" then this field will not affect injection.
Zero Throttle Map: This feature allows the user to adjust a special fuel map that is used
only when the throttle is closed. This can allow a very quick and simple adjustment of
the idle fuel settings on engines with difficult idle characteristics. This option can be
disabled if not required.
Full Throttle Map: This feature allows the user to adjust a special fuel map that is used only
when the throttle is wide open on normally aspirated engines. With some manifold and
or throttle designs, pressures in the manifold can reach close to atmospheric pressure
before full throttle is applied. This effect can make tuning difficult around full throttle.
This map allows the full load settings to be easily set without interfering with lighter
load settings. The throttle position at which this Map is used is set by the Full Throttle
Threshold field.
Full Throttle Threshold: See the Full Throttle Map field above for information on this field.
This field can be set between 70 and 100.
Barometric Lock: If you wish to lock the barometric value that is stored by the ECU to a
set value and override the start-up barometric correction, enable this option.
Barometric Pressure Lock: Allows you to set the barometric value to which the ECU
corrections will be locked. Default is 1013mBars ( = 1 Atmosphere @ sea level)
See Chapter 3, Engine Identification for information on how to adjust these parameters.
Once you have set up the fuel delivery via the Fuel Setup, you can view the Fuel Maps.
Press
sP
then
)
to view the Fuel Sub-Menu. Then chose the range you wish to view by
using the function keys. While in the Fuel map, each range can be accessed by pressing the
1
,
3
and
-
keys to move to the next, previous range and jump to a particular range.