EFI-101 Course Outline

I. INTRODUCTION About EFI University

II. ENGINE TUNING BASICS

  1. A.The Four-Stroke Cycle
  2. Engine Revs vs Engine Cycles
  3. Volumetric Efficiency
  4. What are Standard Conditions?
  5. What are “Absolute” Conditions?
  6. What is Air Density?
  7. What is Air Flow (Volume vs Mass)?
  8. KPA/BAR vs InHg/PSI
  9. Brake Specific Fuel Consumption
  10. Brake Specific Air Consumption
  11. What is Air/Fuel Ratio?
  12. What is Lambda?

III. BASICS OF ELECTRONICS

  1. Voltage
  2. Resistance
  3. Amps
  4. Vermont = Rhode Island

IV. WAVE FORMS

  1. Sine Wave
  2. Square Wave
  3. Amplitude
  4. Frequency
  5. Pulse Width
  6. Duty Cycle
  7. Output Control

V. EFI SYSTEM COMPONENTS

A. Sensors

  1. Map Sensor
  2. Throttle Position Sensor
  3. Coolant Temperature Sensor
  4. Intake Air Temperature Sensor
  5. Engine Speed Camshaft Position Sensor
  6. Knock Sensor
  7. Oxygen Sensor

B. Actuators

  1. Ignition Outputs
  2. Fan Relays
  3. Air Conditioning Relays
  4. Injectors
  5. Choosing an Injector

C. Control Tables

  1. Base Fuel
  2. Base Ignition
  3. Boost Control
  4. Idle Control

VI. HOW DOES IT ALL WORK?

  1. PV = NrT
  2. Calculating Injector Pulse Width

VII. TUNING THE ENGINE

  1. What Air/Fuel Ratio Does My Engine Want?
  2. Understanding Ignition Timing
  3. Cold Starting
  4. Fuel Requirements
  5. Ignition Requirements
  6. Dyno Tuning
  7. Road Tuning

VIII. TOOLS OF THE TRADE

  1. DVOM
  2. Test Light
  3. Powered Test Light
  4. Vacuum Pump
  5. Fuel Pressure Gauge
  6. Oscilloscope
  7. Dynomometer
  8. Air/Fuel Ratio Monitor

IX. FUNDAMENTALS OF WIRING

  1. Wire Sizes
  2. Solder or Crimp?
  3. Using Relays
  4. Covering Wires
  5. Crimping Tools

X. TUNING PROCESS: START TO FINISH

  1. Fuel Type
  2. Compression Ratio
  3. Induction Type
  4. Set Fuel Pressure
  5. Getting Started and Running
  6. Set Mechanical Base Timing
  7. Tune engine to idle properly after Warm-up
  8. Tune No-Load RPM sites
  9. Tune No-Load acceleration enrichment
  10. Tune light load RPM sites
  11. Tune medium to heavy load RPM sites
  12. Tune Full load RPM sites
  13. Review Data Logs and Power Graphs
  14. Make final changes
  15. Street or Track tuning and testing

XI. FUN FORMULAS

  1. Horsepower and Torque
  2. Horsepower
  3. Volumetric Efficiency
  4. Cubic Inch Displacements
  5. Rev Limits
  6. Fuel Injectors