Haltech E6A - Manual (Page 84)

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Boost Map. The Maximum Boost Map should always contain values greater than or equal to
the corresponding values in the Standard Boost Map.
The use of two independent boost maps allows an engine to be set up for maximum boost
conditions, but driven safely at lower boost pressures without the need of re-loading maps. The
boost controller may be used by the driver to match the engine's power output to the current
demand: higher boost pressures for qualifying speeds, lower boost levels for engine
preservation or wet roads.
If time constraints do not permit the complete mapping of the TWG function, waste gate
control may be executed from just one map. Select the Maximum Boost Map as the primary
map and the Standard Boost Map is never accessed.
16.3 Dual Intake Valve Control (DIV)
Some late model engines possess two tuned intake manifolds. One intake tract remains shut at
lower rpm where there is less airflow, then opens as airflow demands increase. This provides a
broader torque curve. The DIV function controls the solenoid that operates this valve.
In order to use the DIV function, you will need the following:
- a two wire solenoid valve mounted in the air intake (already on the engine);
- E6A programming software and cable.
Wire the solenoid to the appropriate output, taking note of voltage polarity. (Some solenoids
are non-polar.) Run the E6A programming software in Online mode and select the Dual Intake
Valve function on the appropriate channel. There are two values to be set.
Switch On RPM: This is the engine speed at which the solenoid is to be energised.
Switch Off RPM: This is the engine speed at which the solenoid is to be de-energised. This
value should be 200-500 rpm lower than the Switch On Rpm - a small amount of hysteresis
will prevent the solenoid from oscillating.
16.4 Torque Converter Lockup (TCC)
This function controls the clutch lockup solenoid on automatic transmissions. Locking the
torque converter reduces the amount of energy lost through the transmission, providing better
fuel economy.
The solenoid activates whenever the road speed is greater than a programmed value for a given
throttle position. The solenoid will only activate if the engine temperature is higher than 46°C
(118°F), and will be disengaged if the throttle position exceeds 70% or road speed falls below
64kph. The TCC function also provides for a 4th gear/transmission over-temperature switch
input. This signal indicates that the transmission is hot, and engaged in top gear. When this is
the case, the lockup solenoid is activated regardless of road speed whenever the throttle is
more than 4% opened.