Haltech E6K - Manual (Page 37)

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4.3 Using the Software
In order to make the software easy to use, the program presents you with a menus bar at the
top of the display. The menu bar is accessed through simple combinations of keystrokes.
Once the appropriate menu has been accessed a sub-menu appears giving choices on
available page heading. To increase efficiency there are also a number of hot-keys that allow
you movement between pages without accessing the menu bar.
4.4 Accessing the fuel maps
Pressing
¦m ¦m ¦m ¦m
will take you to the Maps Menu. From the Sub-menu choose the fuel
maps option by using the cursor keys to move the highlighted bar or pressing the underlined
letter of the option required, in this case
F F F F
. This will produce a further sub-menu that will
allow you to choose a range to be viewed.
4.4.1 Fuel Set-up
The Fuel Set-up works in an identical way to the Identification. It’s fields are different and
relate to the way the fuel is delivered to the engine. Enter the Fuel Set-up by pressing
¦s ¦s ¦s ¦s
and then by pressing
F F F F
key. The fields in the Fuel Set-up are:
Ign / By
Ignition Divide By is the number of ignition pulses that will be counted until the next
injection pulse. For almost all multipoint systems, injection should occur once per
revolution and so Ignition Divide By should be set to half the number of cylinders. If
the system is operating in Batch Fire or Sequential mode, or is a rotary, then a value of
1 is suggested.
Decel Cut-Off
A common fuel saving feature in original equipment computers is a fuel cut-off on
deceleration. This will cut fuel delivery to the engine while coasting down hills with
closed throttle. This feature can be enabled or disabled on the E6K. It is better, when
first tuning, to disable this function.
Injection Mode
Depending on the ECU settings the E6K splits its four/eight injector driver outputs
into two banks (see chapter 13, 13.1). INJ1 and INJ2 comprise the first bank. INJ3 and
INJ4 form Bank 2 (refer to the wiring diagram at the back of this manual.) In Basic
Mode, Fuel can be injected in three different modes.
Multipoint injection fires all the injectors together. This is the most common set-up
and will normally be used on engines with multipoint injection manifolds (one injector
per cylinder).
Batch-fire injection is usually used in throttle body or non-turbo rotary set-ups and
fires the two banks of injectors alternately. On eight and twelve injector fuel rails, with
high-flow injectors, this may also help reduce fuel pressure oscillations caused by all
injectors pulsing together.