List of EFI anacronyms

If you can add useful anacronyms and abbreviations (We all know what FUBAR means already) please do so, with the intent that this will likely become a "sticky" soon.

Maybe we could also add a list of formulas used as well, but here's some common stuff.

A/C Air Conditioning
A/D Analog to Digital ( sometimes ADC)
ABS Anti-Lock Brake System
ADC Analog to Digital Converter
AE Acceleration Enrichment
Aero Aerodynamic(s)
AFCO All Fuel Cut Off
AFPR Adjustable FPR
AFR Air Fuel Ration
ALDL Assembly Line Diagnostic Link
ALPHA-N Form of EFI
BBC Big Block Chevy
BDC Bottom Dead Center
BIN Binary
BLM Block Learn Multiplier
BP Barometric Pressure
BPC base pulse constant
BPW Base Pulse Width
CAFÉ Corporate Average Fuel Economy
CAN Controller Area Network
CARB Carburetor. (Also California Air Resources Board)
CAT Catalytic Converter
CC Combustion Chamber
CCC Computer Controlled CARB
CDI Capacitive Discharge Ignition
CE Check Engine
CFI CrossFire Injection
CL Closed Loop
CNP Coil Near Plug
CPU Central Processing Unit
CTS Coolant Temp Sensor
DAC Digital Analog Converter
DC Duty Cycle
DE Deceleration Enleanment
DFCO Deceleration Fuel Cut-Off
DIY Do It Yourself
ECM Engine Control Module
ECT Engine Coolant Temperature
ECU Electronic Control Unit
EEPROM Electronically EPROM
EFI Electronic Fuel Injection
EGO Exhaust Gas Oxygen
EGR Exhaust Gas Recirculation
EGT Exhaust Gas Temperature
EPROM Erasable PROM
ESC Electronic Spark Control
EST Electronic Spark Timing
F/A or A/F Fuel-Air Ratio
FEEPROM Flash EEPROM
FP Fuel Pump
FPR Fuel Pressure Regulator
GM General Motors
GN Grand National
HEGO Heated EGO
HEI Heigh Energy Ignition
HW HighWay
IAC Idle Air Control or Intake Air Control
IAT Intake Air Temp
IC Injector Constant
INT Integrator
KS Knock Sensor
Lean AFR greater than Stoich
LT Long Tubes
LTC Long Term Correction
MAF Mass Air Flow
MAP Manifold Absolute Pressure
MAT Manifold Air Temperature
MIL Malfunction Indicator Lamp
MPFI MultiPort Fuel Injection
NB Narrow Band
NETRES Network of Resistors
O2 Oxygen
OBD-I On-Board Diagnostics pre-95
OBD-II On-Board Diagnostics post-95 pre CAN
OEM Original Equipment Manufacturer
OL Open Loop
PA3 Peripheral Address # but with GM it's the Knock Counter
PCM Powertrain Control Module
PE Power Enrichment
PFI Port Fuel Injection
PIC Programmable Integrated Circuit
PROM Programmable ROM
PSI pounds per square inch

PW Pulse Width
PWM Pulse Width Modulated
RESNET Resistor Network
Rich AFR less than Stoich
ROM Read Only Memory
SA Spark Advance
SAE Society of Automotive Engineers
SBC Small Block Chevy
SD Speed Density
SES Service Engine Soon
SFI Sequential multiport Fuel Injection
STC Short Term Correction
Stoich Stoichiometry
TBI Throttle Body Injection
TCC Torque Converter Clutch
TDC Top Dead Center
atdc = after top dead center
btdc = before top dead center
TF = throttle follower
TGO ThirdGen.Org
TPI Tuned Port Intake
TSA total spark advance
TPS Throttle Position Sensor
VAFPR Vacuum referenced ADFP
VATS = vehicle anti-theft system
VE Volumetric Efficiency
VS Vehicle Speed
VSS Vehicle Speed Sensor
WB Wide Band
WOT Wide Open Throttle



mse c = milli second .001 seconds
usec = micro second .000001 seconds
nsec = nano second .000000001 seconds
pph = pounds per hour
gps = grams per second
bsfc = brake specific fuel consumption
mvdc = milli volts dc
.