Haltech E8 User Manual

Page 57

Haltech E11/E8 Instruction Manual

Boost Control Open Loop

Open loop boost control allows the user to set a predefined duty cycle for the boost control solenoid to run
at, this duty cycle is set in the “wastegate control map”. The ECU will run the boost control solenoid at the
desired duty cycle regardless of the actual boost the engine is creating.

Figure 53

Refer to tuning section for details on how to setup and tune open loop boost control.

Dual Intake Valve Control

Some late model engines possess two tuned intake manifolds seperated by a set of butterly valves. 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.

•

On RPM - The RPM above which the solenoid is energised.

•

Off RPM

- The RPM below which the solenoid is not energised.

The Toyota TVIS system requires the solenoid to be energised at low RPM to close the secondary intakes
and de-energised to open the secondary intakes. To achieve this logic, select the output to be inverted
within the output options window.

Figure 54

ECU Diagnostics Light

This feature allows a warning light to be illuminated when certain sensor conditions are met. This output is
useful for determining if a sensor has failed or been disconnected, it is also useful for setting a warning
light if engine temperature goes above safe levels. To access the diagnostics limits for each sensor go to
the setup menu -> sensor setup -> sensor diagnostics.

Engine Control Relay

This feature allows the 12-volt supply to the engine to be disconnected when the ECU is not powered up.
There are no parameters for this feature. The engine control relay should be wired as shown in the figure
below. The ECU is not capable of supplying power to the relay or the components it drives but can sink
the current required to energise the primary winding of the relay (ie the ECU is only capable of switching

Page: 57

This manual is related to the following products:

E11V2