Haltech E8 - Manual (Page 85)

Haltech E11/E8 Instruction Manual
engine speed. You will achieve maximum power by aiming for maximum torque at all engine speeds.
Tuning For Idle
Typical idle speeds usually sit between 500 RPM and 1000 RPM. In order to assist the idle control
mechanism to achieve a steady engine speed, it is advisable to ensure that the ignition advance at the idle
loads between 500 and 1000 RPM are similar if not the same. It can be helpful to actually have the
advance of the 500 RPM range to be slightly higher than the advance at 1000 RPM so that as engine
speed dips, the increase in ignition advance tries to raise the engine speed. This will help the engine to
find a stable equilibrium.
Ignition Quickmap
To save time when tuning the ignition maps the ignition quickmap feature can be used to build a base
ignition map before fine tuning on a dyno or the road. This feature can be found under the options menu.
The ignition quickmap has 6 user definable fields to be filled out that will set the basis for the base map to
be built up upon, they are as follows:
Figure 88 - Ignition Quickmap
• Ignition advance at idle – Total ignition advance at idle.
• Ignition advance at peak torque (atmo)(deg) – Total ignition advance when the engine is at peak
torque and manifold pressure is equal to atmospheric pressure (wide open throttle naturally aspirated).
• Peak torque RPM – The RPM at which peak torque occurs, this value is used to determine at which
RPM point to use the 'ignition advance at peak torque' value.
• Additional ignition advance at light load (deg) – Addition ignition advance on top of the
atmospheric (wide open throttle) advance to be added when the engine is at light load.
• Ignition retard per load point under boost (deg) – Ignition retard per load bar in the ignition map
when an engine comes into positive pressure. Take care when setting this value as it the pressure
variation in pressure between load points is dependant heavily on the MAP sensor used (ie a 2 bar
MAP sensor has a load point every 6.4kpa whereas a 3 bar MAP sensor has a load point every
9.7kpa).
• Additional advance at maximum RPM – Additional ignition advance above the peak torque advance
at the engines maximum RPM (maximum RPM is based on the value set in the rev limiter setup).
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