Haltech E6X Manual Win Version - Manual (Page 39)

E6X Manual
39
Injection Mode
The ECU can operate in 4 different injection modes depending on the application
these are:
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.
Staged injection is usually used on high boost turbo engines. Injector outputs 1 and 2
fire all the time, just as in a multipoint set-up. When the boost pressure exceeds a
programmed value, injector outputs 3 and 4 are enabled.
The staged injectors are normally upstream of the primary injectors. The point at
which the ECU switches in the secondary injectors is set via the Staging Bar Number
field which is described below. Staging permits high fuel-flow capability, but
maintains accuracy and controllability at light load and idle.
Sequential injection fires the injectors sequentially meaning the fuel can be injected at
precisely the right time, this is particularly useful for engines with large duration
cams. This not a straightforward set-up, it requires more outputs for fuel than
normally used.
Enable Injectors
This field allows the user to turn on all injector outputs. Turning this checkbox off will
disable all injector output which allows easy checking if the trigger and ignition
timing when cranking without having to locate the injector fuse and remove it.
Post Start Temp Limit
This field sets the temperature at which the post start correction map is either enabled
or disabled. The following field “Above/Below” sets whether the enabled state
corresponds to a temperature above or below the Post Start Temp Limit. The Post
Start correction map will apply correction to the injection times from when the motor
is started to when the engine temperature reaches the Post Start Temp limit.
Post Start Time Limit
This field sets the period of time across which the Post-start map is to operate.
Ignition Divide 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 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.