I am pasting all the good Mustang related acronyms from the replies below up into this first post...
2V - two valves per cylinder (one intake, one exhaust)
3V - three valves per cylinder
4V - four valves per cylinder (two intake, two exhaust)
A/F - Air/Fuel ratio
ABS - Anti Lock Brakes
AC - air conditioner
ACT - Air Charge Temperature (sensor)
AOD - Automatic Overdrive
BAP - Boost-A-Pump
BAS - Boost-A-Spark
BBK - BBK Performance Parts
BOV - Blow Off Valve
C/C - Caster Camber Plates
CAI - Cold Air Intake
CCRM - constant control relay module
CL - closed loop
COP - coil on plug
DR - drag radial
DOHC - double overhead cam
ECT - Engine Coolant Temperature (sensor)
EEC - Electronic Engine Control
EGR - exhaust gas recirculation valve
EGT - Exhaust Gas Temperature
ET - elapsed time
F/I - forced induction (turbo, supercharger, blower)
FIPK - Fuel Injection Performance Kit
FLSFC - Full Length Subframe Connectors
FMIC - front mount intercooler
FORD - first on race day
FRPP - Ford Racing Performance Parts
HID - High Intensity Discharge Lighting
IAC - idler air control valve assembly
IAT - intake air temperature sensor
IRS - independent rear suspension (cobra)
KB - Kenne Bell
KB - Kenny Brown
KYB - Kayaba Industry Co. Ltd. (Shocks)
LT - Long Tube Headers
MAF - mass air flow sensor
MGW - MGW LTD. (shifters, billet accessories)
MIL - Malfunction Indicator Lamp
MM - Maximum Motorsports
N/A - naturally aspirated
NHTSA - National Highway Transportation Safety Administration
NOS - Nitrous Oxide Systems
NPI - non performance improved
NX - Nitrous Express
O/R - off road (not street legal)
OASIS - On-Line Automotive Service Information System
OBD - Onboard Diagnostic Codes (OBD-II, OBD2)
OEM - original equipment manufacturer
OL - open loop
PATS- passive anti-theft system
PCM - Powertrain Control Module
PCV - postitive crankcase ventilation valve
PI - Performance Improved 99+ 4.6 V8
PTW - piston to cylinder wall clearance
R^2 - remove and replace
RTFM - read the friendly manual (other decryptions exist)
RTV - room temperature vulcanization
S/C - supercharged
SCCA - Sports Car Club of America
SES - service engine soon (dash light)
SFC - Subframe Connectors
Solo2 - Autocross
SOHC - single overhead cam
SOTP - seat of the pants
SRS - Supplemental Restraint System
STB - Strut Tower Brace
SVO - Special Vehicle Operations (Now SVT)
SVT - Special Vehicle Team
T/A - timing adjuster
TB - throttle body
TOB - throw out bearing
TPS - Throttle Position Sensor
TSB - technical service bulletin (from Ford)
TT - Twin Turbo Chargers
TTT - To the Top (Regarding Threads)
UDP - Under Drive Pullies
VIN - vehicle identification number
WOT - wide open throttle
2V - two valves per cylinder (one intake, one exhaust)
3V - three valves per cylinder
4V - four valves per cylinder (two intake, two exhaust)
A/F - Air/Fuel ratio
ABS - Anti Lock Brakes
AC - air conditioner
ACT - Air Charge Temperature (sensor)
AOD - Automatic Overdrive
BAP - Boost-A-Pump
BAS - Boost-A-Spark
BBK - BBK Performance Parts
BOV - Blow Off Valve
C/C - Caster Camber Plates
CAI - Cold Air Intake
CCRM - constant control relay module
CL - closed loop
COP - coil on plug
DR - drag radial
DOHC - double overhead cam
ECT - Engine Coolant Temperature (sensor)
EEC - Electronic Engine Control
EGR - exhaust gas recirculation valve
EGT - Exhaust Gas Temperature
ET - elapsed time
F/I - forced induction (turbo, supercharger, blower)
FIPK - Fuel Injection Performance Kit
FLSFC - Full Length Subframe Connectors
FMIC - front mount intercooler
FORD - first on race day
FRPP - Ford Racing Performance Parts
HID - High Intensity Discharge Lighting
IAC - idler air control valve assembly
IAT - intake air temperature sensor
IRS - independent rear suspension (cobra)
KB - Kenne Bell
KB - Kenny Brown
KYB - Kayaba Industry Co. Ltd. (Shocks)
LT - Long Tube Headers
MAF - mass air flow sensor
MGW - MGW LTD. (shifters, billet accessories)
MIL - Malfunction Indicator Lamp
MM - Maximum Motorsports
N/A - naturally aspirated
NHTSA - National Highway Transportation Safety Administration
NOS - Nitrous Oxide Systems
NPI - non performance improved
NX - Nitrous Express
O/R - off road (not street legal)
OASIS - On-Line Automotive Service Information System
OBD - Onboard Diagnostic Codes (OBD-II, OBD2)
OEM - original equipment manufacturer
OL - open loop
PATS- passive anti-theft system
PCM - Powertrain Control Module
PCV - postitive crankcase ventilation valve
PI - Performance Improved 99+ 4.6 V8
PTW - piston to cylinder wall clearance
R^2 - remove and replace
RTFM - read the friendly manual (other decryptions exist)
RTV - room temperature vulcanization
S/C - supercharged
SCCA - Sports Car Club of America
SES - service engine soon (dash light)
SFC - Subframe Connectors
Solo2 - Autocross
SOHC - single overhead cam
SOTP - seat of the pants
SRS - Supplemental Restraint System
STB - Strut Tower Brace
SVO - Special Vehicle Operations (Now SVT)
SVT - Special Vehicle Team
T/A - timing adjuster
TB - throttle body
TOB - throw out bearing
TPS - Throttle Position Sensor
TSB - technical service bulletin (from Ford)
TT - Twin Turbo Chargers
TTT - To the Top (Regarding Threads)
UDP - Under Drive Pullies
VIN - vehicle identification number
WOT - wide open throttle
