Haltech E8 - Manual (Page 105)

Haltech E11/E8 Instruction Manual
Post Start Offset Position - On start up, this opens up the stepper motor to help start the engine by
allowing more air. This value is added on to the ‘Start Position’. This new calculated value is used when
the ECU is initialized and the engine is not running and also for the first three seconds of the engine
running.
Air Con RPM Increment - This value is added to the ‘Target RPM’. It is done to handle the extra load
when the air con is turned on. It is taken away again when the air con is turned off.
Air Con Steps Increment - This value is added to the ‘Start Position’. It is done to handle the extra load
when the air con is turned on. It is taken away again when the air con is turned off.
Idle Target Dead Band - Used to stop the idle controller from ‘over controlling’ the idle due to the small
fluctuations in RPM when at idle. E.g. target RPM = 1000RPM, dead band = 50RPM, therefore if the
engine RPM fall between 950RPM and 1050RPM then the idle controller will ignore any changes in RPM
and considered it to be controlled. (E.g. 15 – 50 RPM).
Decel RPM Rate - This value helps determine if the RPM is falling or steady when off the throttle. When
the RPM is steady then it is ready to be controlled. If this value is set too low then the fluctuations of an
RPM which is hovering consistently around one point will make the controller think that the RPM is never
steady. If this is set too high then the RPM could be considered steady when it is still falling. (E.g. 25 – 50
RPM).
Decel to Idle Control Wait - When the RPM has finished falling and has become steady, idle control will
happen after this period of time.
On Throttle Stepper Position - When on throttle and off boost the stepper motor defaults to this value.
Stepper Motor Response - Speed at which the stepper motor moves.
Figure 107 - Stepper Motor Idle Control Parameters
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