Common Abbreviations

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Contents

A

ABS
Anti-lock Brake System
AW
AudiWorld

B

BMC
Brake Master Cylinder
BOV
Blow Off Valve
BPV
ByPass Valve
BSC
Brake Slave Cylinder

C

CAN
Controller Area Network. A (newer) communication standard used by some models/years of vehicles.
CEL
Check Engine Light
CF
Correction Factor
Carbon Fiber
CMC
Clutch Master Cylinder
CSC
Clutch Slave Cylinder

D

DBW
Drive-By-Wire (a.k.a Electronic Throttle Control)
DTC
Diagnostic Trouble Code
DTS
DriveTrain Stabilizer (a.k.a Transmission Stablizer Bar)
DV
Diverter Valve

E

EBC
Electronic Boost Controller
ECU
Electronic Control Unit
ECUx
APR's ECU Explorer
EDL
Electronic Differential Locking
EFK
Electric Fan Kit
EGR
Exhaust Gas Recirculation
EGT
Exhaust Gas Temperature
EMS
Engine Management System
ESP
Electronic Stability Program
ETC
Electronic Throttle Control (a.k.a "drive-by-wire")

F

FMIC
Front Mount InterCooler
FPR
Fuel Pressure Regulator

I

IAT
Intake Air Temperature
IC
InterCooler

K

KV
Knock Voltage
KAWF
forum software

L

LSD
Limited Slip Differential
LTFT
Long Term Fuel Trim
LWFW
Lightweight Flywheel

M

MAF
Mass Air Flow
MAP
Manifold Air Pressure
MBC
Manual Boost Controller
ME7.1
Motronic system (with ETC) version 7.1
MY
Model Year

O

OBD II
On-Board Diagnosis - stage II (old, US-mandated standard for engine diagnostics & emissions)
OEM
Original Equipment Manufacture/Manufacturer
OP
Original Poster
OT
Off-Topic

P

PCV
Positive Crankcase Ventilation

S

SAC
Self-Adjusting Clutch
SMIC
Side-mount Intercooler
STFT
Short Term Fuel Trim

T

TB
Throttle Body
Timing Belt
TBB
Throttle Body Boot
TC
Throttle Cut
TCD
Throttle Cut Defender (a.k.a "MAP clamp")
TCU
Transmission Control Unit
TDC
Top Dead Center
TIP
Turbine Inlet Pressure
Tiptronic
TRE
Tie Rod End
TSB
Technical Service Bulletin
Transmission Stabilizer Bar (a.k.a. "Drivetrain Stabilizer")

V

VAG
Volkswagen Audi Group
VVT
Variable Valve Timing

W

WOT
Wide Open Throttle
Personal tools