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Tuning/Setup Guide

Overview

This section of the manual provides a guide to the tuning process using the GEMS software. It is intended to be used as a reference guide for both new and experienced users of the software.

  • Concepts
  • Inputs
  • Sensors
  • Outputs
  • Sensor Scaling
  • Changes Requiring ECU Reset
  • ECU States
  • RPM Pickup
  • Starting the Engine / Ignition Key
  • Engine Speed (RPM) Calculation
  • Ignition Timing
  • Limp Mode
  • Rain Light
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  • GWv4 Manual


  • Introduction
    • Notation
    • Getting Started
    • Licensing the Software
      • USB Dongle
    • Installation
    • GWv4 Revision History
  • ECU
    • ECU Definition Files
    • ECU Connection
    • ECU Definition Extension Files
    • Connection Settings
    • Connection Troubleshooting
    • Baud Rates
    • Programing/Upgrading ECU Firmware
  • Tuning/Setup Guide
    • Concepts
      • ECU Objects
      • Output Pins
      • ECU Internal Routing
      • User Scalars
    • Inputs
      • Analog Outputs
      • Internal Switches
    • Sensors
      • Load Sensing
      • MAF Sensor
      • MAP Sensor
    • Outputs
      • Digital Outputs
      • PWM Outputs
      • Timed Outputs
      • Oil Feed Outputs
      • Peak & Hold Injector Outputs
    • Sensor Scaling
      • Fuel Pressure Scalar
      • Load Scalar
      • MAF (Load) Scalar
      • MAF Scalar
    • Changes Requiring ECU Reset
    • ECU States
    • RPM Pickup
      • RPM Pickup Wizard
      • Crank Sensor
      • Cam Sensor
      • Engine Cycle Sync (Camshaft)
      • Actual Teeth vs Internal Teeth
      • Synchronization
        • Sync MX
        • Sync Cam Count
        • Sync Crank S Count
        • Sync Cam
      • Tooth Control Table
      • Tachometer Output
    • Starting the Engine / Ignition Key
    • Engine Speed (RPM) Calculation
    • Ignition Timing
    • Limp Mode
    • Rain Light
  • Calibrations
    • Starting a New Calibration
    • Editing a Calibration
    • Programming a Calibration
    • Storing Calibration Changes Permanently
    • Password Protection
    • Comparing Calibrations
    • Converting a Calibration
    • Live Trim Control
    • Calibration Aspects
    • Calibration Notes
    • Calibration Checker
  • Data Logging
    • PC Logging
    • Log Playback
    • ECU Internal Logging
    • EM80-M Internal Logging
    • Engine History Log
  • Simulink® ECUs
  • Using GWv4
    • Frequently Asked Questions
    • PC based auto mapping
    • Unit configuration
  • Workspace
    • Docking
      • View Explorer
      • Properties Window
      • ECU Status Window
      • Comms Monitor
      • Descriptions
    • Tabs
    • Configure Shortcut Keys
    • Colour Scheme (Light/Dark Mode)
    • Setting Default Folders
    • Units
    • Sizer Based Layouts
  • Views
    • Manipulating View Objects
    • Audit
    • Bar
    • Button
    • Channel List
    • Checkbox
    • Dial (Pot)
    • Group
    • Image
    • Label
    • Log Map
    • Log Map Controller
    • Log Map Target
    • Map Graph
    • Map Grid
    • Map Slice
    • Map Target
    • Notes
    • Number Edit
    • Number Gauge
    • Option Full List
    • Option Selection List
    • Scope
    • Sequencer
    • Signal Generator
    • Table Graph
    • Table Grid
    • Tachometer
    • Wizard
  • Functions
    • Function Editor
    • Fill Function
    • Example Function Scripts
    • Map & Table Functions
    • Fuel Map Functions
  • Commands
    • Shortcut Keys
    • File Menu
    • Edit Menu
    • ECU Menu
    • Telemetry Menu
    • Logging Menu
    • View Menu
    • Wizards Menu
    • Tools Menu
    • Layout Menu
    • Configure Menu
    • Help Menu
    • Context Menu
  • Scripting
    • Global Functions
    • External Automation
    • App
    • CANFrame
    • CanPort
    • CANRxChannel
    • CANRxMessage
    • CANRxSetup
    • Ecu
    • EcuDefinition
      • EcuCategory
      • EcuChannel
      • EcuChannelTable
      • EcuItem
      • EcuItemCollection
      • EcuItemIndexed
      • EcuLogMap
      • EcuLogMapTarget
      • EcuMap
      • EcuObject
      • EcuObjectScaled
      • EcuOption
      • EcuRegion
      • EcuString
      • EcuTable
      • EcuUserScalar
    • View
      • AspectSelector
      • Button
      • CheckableView
      • CheckBox
      • ComboBox
      • Dial
      • GridView
      • Label
      • MultiSiteView
      • Notes
      • NumberEdit
      • OptionEditor
      • RadioButton
      • Scope
      • SensorCalibrationView
      • Sequencer
        • SequencerItem
      • SignalGenerator
      • ToggleButton
      • UnitPreferenceView
      • UnitSelector
      • WizardListView
    • Window
    • Wizard
    • Array
    • Function Objects
  • XCP
    • A2L Unit Groups
  • Open Source Licenses
  • Contact

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