Haltech Platinum Pro 350z - Manual (Page 14)

User Manual – Haltech 350Z
Tuning Mode
Depending on the Load source, the tuning modes available may change.
MA
F
MA
P TPS
Volumetric Efficiency
(VE)
  
Injection Time (mS)
  
Lambda Correction (y)
  
Volumetric Efficiency (VE): VE tuning is available when MAP or TPS is selected as the Main Load source.
VE or Volumetric efficiency allows the ECU to determine the injection time
based on the Engine Capacity, Desired AFR, Injector Flow and Volumetric
Efficiency table. For more information on VE tuning, please go to Appendix A.
Injection Time:The Injection time to be used by the ECU is obtained directly from the Base Fuel Table. Please
note that the Injector Dead Time table value will be added to the final Injection
Time.
Lambda Correction: Lambda Correction tuning is available when the MAF sensor is selected as the Main
Load source. The ECU calculates the Injection time based on the signal from the
MAF sensor. The values entered into the Base MAF Table are theoretical
values, and may not exactly reflect what is measured in the exhaust. Correction
tables can be used to correct for any differences.
5.1.2 Manifold Pressure Source
The ECU is fitted with an internal MAP sensor rated to 22PSI (150 KPa). Alternatively an external MAP sensor
can be fitted to the ECU allowing higher manifold pressures. Please see the patch harness diagrams for external
MAP sensor fitting. A Manifold Absolute Pressure sensor is required for all tuning methods.
5.1.3 Engine Capacity
The engines capacity is required by the ECU whenever Volumetric Efficiency (VE) tuning is selected. An
incorrect engine capacity value will give incorrect fuelling.
5.2 O2 Control
The ECU is capable of correcting the fuel injection time to 14.7:1 or Lambda 1 for both idle and cruise conditions
using the factory O2 sensors. Early 350Z models were fitted with Narrow band oxygen sensors and later models
are equipped with Wide band oxygen sensors. It is recommended to disable the O2 control during engine tuning.
O2 Control: This setting allows the O2 Controller to be switched on or off.
O2 Sensor Type: Determines the sensor used for the O2 control. Please check which sensors are fitted to your
vehicle. Incorrect sensor choice may provide erratic O2 control.
Narrow Band Target (V): Determines the voltage the O2 controller will try to target. When operating the O2
sensor voltage will constantly oscillate either side of this target voltage.
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