This is a place to post up commonly used accronyms in the w-body world. Please feel free to add to this list with your own additions. Soon, we should have a permalink that gets updated. Here are a few to get started:
ABDC - After Bottom Dead Center
A/C - Air Conditioning
ACC - A/C Clutch
A/F - Air/Fuel
AFC - Air Fuel Controller
AFR - Air/Fuel Ratio
AE - Acceleration Enrichment
ALT - Alternator
AP - Air Pump
ATDC - After top dead center
BBDC - Before Bottom Dead Center
BCM - Body Control Module
BDC - Bottom Dead Center
BTDC - Before top dead center
BTSI - Brake Transmission Shift Interlock
CAI- Cold Air Intake
Cat - Catalytic converter
CKP - Crankshaft Position Sensor
CPS - Cycles Per Second (Cycles per second are taken of the crankshaft position sensor)
DEG - Degrees Celsius or Fahrenheit
DIC - Driver Information Center
DTC - Diagnostic Trouble Codes
DP - Down Pipe
ECT - Engine Cooling Temperature
EFI - Electronic Fuel Injection
EGR - Exhaust Gas Recirculator
EGT - Exhaust Gas Temperature
EST - Electronic Spark Timing
FI - Fuel Injection
FPR - Fuel Pressure Regulator
FT - Foot
FTL - For the Loser
FTMFW - For the Mother F**kin Winner
FTW - For the Winner
FWI - Fenderwell Intake
GPF - Grand Prix Forums
HAI- Hot Air Intake
HZ - Hertz (Frequency)
IAC - Idle Air Control
IAT - Idle Air Temperature
IC - Intercool(er/ed)
ISS - Idle Speed Stepper
KOEO - Key On Engine Off
KOER - Key On Engine Running
KPA - Kilopascal
KR - Knock Retard
L36 - Series II naturally aspirated 3.8L engine code
L26 - Series III naturally aspirated 3.8L engine code
L67 - Series II Supercharged 3.8L engine code
L32 - Series III Supercharged 3.8L engine code
LS4 - v8 engine code
LBS - Pounds
LIM - Lower Intake Manifold
MAF - Mass Air Flow
MAP - Manifold Absolute Pressure
MAT - Manifold Air Temp
Mg - Milligram
MPFI - Multi-port Fuel Injection
MPH - Miles Per Hour
MPS - Modular Pulley System
Ms - Milliseconds
NA - Naturally Aspirated
NBO2 - Narrowband O2 Sensor
02 - Oxygen
PCM - Powertrain Control Module
PCV - Positive Crankcase Ventilation
PE - Power Enrichment
PEM - Ported Exhaust Manifold
PLOG - Power Log; front exhaust manifold from ZZP
PSI - Pounds Per Square Inch
ROFL - Rolling on the Floor Laughing
ROTFLMAO - Roll on The Floor Laughing My Ass Off
RPM - Revolutions Per Minute
SC - Supercharg(er/ed)
SEC - Seconds
STB - Strut Tower Brace
TB - Throttle Body
TBI - Throttle Body Injection
TCC - Torque Converter Control/ Torque Converter Clutch
TCS - Torque Control System / Traction Control system
TDC - Top dead center
TOGS - The Other Guys headers
TPS - Throttle Position Sensor
T-stat - Thermostat
UIM - Upper Intake Manifold
VE - Volumetric Efficency
VS, GT, XP, XPZ - aftermarket cams
VSS - Vehicle Speed Sensor
WBO2 - Wideband O2 Sensor
WOT - Wide Open Throttle
