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This page contains a list of FAQ's (frequently asked questions) and acronyms one will find in use on this site and in common use on the Message Boards. If you should have any questions, comments, or additions for this list, please feel free to email me. Please ensure that any item you wish to add is not already in the list in some form (ie: ROTFLMAO is essentially the same as rotfl).

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Numbers A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Acronym/Phrase Meaning/Description
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22B Not an acronym, but a special limited edition Impreza released in Japan and England
4EAT Four Speed Electronic Automatic Transmission
555 A tabacco company that used to be a sponsor of Subaru World Rally Team
5MT Five speed manual transmission
6MT Six speed manual transmission
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ABS Antilock Braking System
AFAIK As Far As I Know
AKI Anti-Knock Index (the US Octane Rating)
ALK Anti-Lift Kit
ALS Anti Lag System- keeps a turbo spooled off throttle by adding fuel into the exhaust... it makes a distinctive "bang" as the fuel ignites
AMHIK Ask Me How I Know
Amp Amplifier (or, unit of electrical current)
AT Automatic transmission
ATF Automatic Transmission Fluid
ATM Atmosphere- a measure of air pressure 1 atm = 14.7psi = 1 Bar
Autox Autocross
Auto-x Autocross
AWD All Wheel Drive
AYBABTU "All Your Base Are Belong To Us" I'm not explaining this one
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Backbox The Queen's English for "muffler"
BAR A measure of air pressure 1 Bar= 14.7psi = 1 atm
Beeeeotch!!!! Term of endearment for Keith or Daniel
BFH Big Fricken' Hammer
Bhp Brake horsepower
Bling The "sound" light makes when reflected off of a shiny surface, like chrome rims
Bonnet The Queen's English for "hood"
Boot The Queen's English for "trunk"
BOV Blow-Off Valve
BRP Blue Ridge Pearl
BTCC British Touring Car Championship
Bump To "bump" a topic back to the top of the forum
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CAI Cold Air Intake
CARB California Air Resources Board
Cat Catalytic Convertor
Catalunya A special limited edition Impreza
CB Citizens Band (two-way radio)
Cd Coefficient of drag- lower is better
CE Check Engine (Light)
CEL Check Engine Light
CF Carbon fiber
CO2 Carbon Dioxide
CV Constant Velocity (joint)
CVT Continuously Variable Transmission
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Diff Differential
DIN Deutsche Industrial Norm. German industrial standard for radio dimensions, approximately 7 inches wide by 2 inches high
Dogbox A transmission with straight cut gears ("dog" gears) usually with partial or no synchros. The stock 5MT transmission uses helical cut gears with synchros, for ease of driving and low noise (straight cut gears are noisy)
DOHC Dual overhead camshaft engine configuration
DMS Drummond Motor Sport, provider of high-end rally suspension.
DSM Diamond Star Motors (Mitsubishi Motors)
DSPO Dip S--t Previous Owner
DTC Diagnostic Trouble Code
Dyno A "rolling road" device used to measure vehicle power,etc.
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EBC Electronic Boost Controller
ECU Engine Control Unit, or Electronic Control Unit (computer)
EFI Electronic Fuel Injection
EGT Exhaust Gas Temperature
EGR Exhaust Gas Recirculation, an emissions lowering technology
EJ20 Engine code for a 2.0 liter Subaru engine
EJ25 Engine code for a 2.5 liter Subaru engine
EVO Mitsubishi Lancer Evolution
Estate The Queen's English for "wagon"
ESP A type of speed trap used by law enforcement
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F1 Formula One (racing)
FHI Fuji Heavy Industries, Subaru's parent company
FF Front Engined, Front Wheel Drive
FMIC Front Mounted Intercooler
Forgies Usually, forged pistons
FR Front Engined, Rear Wheel Drive
FRP Fiberglass Reinforced Plastic
FRS Family Radio Service (two-way radio; aka "TalkAbout")
FS For Sale
FT For Trade
FWD Front Wheel Drive
FWIW For What It's Worth
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Ga Gauge (lower number = thicker/bigger)
GB Group Buy
GC8 Chassis code for Old School Impreza Coupe/Sedan
GDA Chassis code for New Age WRX Sedan
GDB Chassis code for New Age STi Sedan
GF8 Chassis code for Old School Impreza Wagon
GGA Chassis code for New Age WRX Wagon
GGB Chassis code for New Age STi Wagon
GOMT "Grap on my tired" (long story) basically another acronym for "Whiskey Tango Foxtrot"
GS G-Stock (SCCA autocross class for stock 2.5RS)
GT A trim level- Usually stands for "Grand Touring"
GT2 Gran Turismo 2
GT3 Gran Turismo 3
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H-4 Horizontally opposed four cylinder engine
HID High Intensity Discharge ("arc headlights")
HMFIC Head Mo Fo In Charge
HP Abbreviation of horsepower, a measure of power equal to 550 foot pounds per second (SAE). When used outside of North America, HP usually means metric horsepower, which is approximately equal to .98632 horsepower (SAE)
HTH Hope that helps
HP Horsepower
HUD Heads-up display
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IAC Idle Air Control
I/C Intercooler
IBTL In Before The Lock
IBTIS In Before The Imprezidential Smackdown
IBTM In Before The Move
ICE In Car Electronics or In Car Entertainment
ICQ Instant messaging chat
ID Inside Diameter
IIRC If I Remember (or Recall) Correctly
IMHO In My Honest (or Humble) Opinion
ITC Ignition Timing Controller
IWOC Impreza Web Owner's Club (UK)
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JDM Japan Domestic Market. Where all the cool stuff goes.
JGTC Japan Grand Touring Championship
JGTCC Japan Grand Touring Car Championship
JTCC Japanese Touring Car Championship
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K&N Brand of high-flow filter products
KB Kartboy
KPH Kilometers Per Hour
Kw Abbreviation of kilowatt, a measure of power approximately equal to 1.341 SAE horsepower
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LADAR LAser Detection And Ranging
LASER Light Amplification by Stimulated Emissions of Radiation
L33t A computer hacker term meaning "elite" and l33tsp34k is a manner of speakikng like c0mpu74r hax0rz
LHD Left hand drive
LIDAR LIght Detection And Ranging
LINK An aftermarket engine management computer.
LSD Limited Slip Differential
LSIR Laguna Seca International Raceway
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MAF Mass Air-Flow Sensor
MAP Manifold Absolute Pressure Sensor
MAS Mass Airflow Sensor
MBC Manual Boost Controller
MBP Midnight Black Pearl
McRae Another limited edition Impreza not available in the US
MIL Malfunction Indicator Lamp
MON Motor Octane Number (see also RON)
MPH Miles Per Hour
MPT Multi-Plate Transfer (Clutch Pack) used in automatic transmission AWD Subarus
MR Mid Engined, Rear Wheel Drive
MRT Middleton Rally Team (Australia)
MT Manual transmission
MY Model Year
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NA Normally aspirated (not turbo/supercharged)
NASIOC North American Subaru Impreza Owner's Club
Nm Abbreviation of newton-meter, a measure of torque approximately equal to .7376 foot-pounds
NOS One of the manufacturers of Nitrous Oxide kits
NOx Nitrogen containing compounds that form photochemical smog
NGK Manufacturer of spark plugs
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O2 Oxygen (e.g., O2 Sensor)
OBD-II On Board Diagnostics II (a computerized emission control system)
OBS Outback Sport (Impreza trim level)
OBW Outback Wagon
OD Outside Diameter
OEM Original Equipment Manufacturer
Offset The distance between a wheel's mounting surface and its horizontal center
OMG Oh My God
OT Off Topic
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P1 A special edition model year 2000 Impreza prepared by Prodrive for the British market
PCV Positive Crankcase Ventilation (valve)
PITA Pain in the ass (or a round flatbread with a pocket inside )
PM Private Message
Post Wh0r3 Someone who posts nonsense to increase their post count
Pot As in, 4-pot brakes- refers to the number of pistons in the caliper
PS Abbreviation of Pferdestdrke, the German measure for horsepower
PSI Pounds per square inch (a measure of air pressure)
PEBKAC Probable Error Between Keyboard and Chair (it's your own fault)
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R&D Research and Development
RADAR RAdio Detection And Ranging (or a character from M*A*S*H )
Rallyx Rallycross
Rally-x Rallycross
RB5 A limited edition British Impreza trim named after WRC driver Richard Burns
RBP Rally Blue Pearl (paint color)
RHD Right hand drive
Rofl Rolling on the floor laughing
Roflmao Rolling on the floor laughing my ass off
RON Research Octane Number (see also MON)
RPM Revolution per minute
RRFPR Rising rate fuel pressure riser
RS Impreza trim level. Stands for "Rally Sport"
RS-T Impreza RS with an aftermarket turbocharger
RWD Rear Wheel Drive
RTFM Read The F'in Manual
Rwhp Rear Wheel Horsepower
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SAE Abbreviation of Society of Automotive Engineers, the US motor vehicle engineering standards promulgator and US counterpart to the German DIN
S-AFC Super Air Flow Converter
S/AFC Super Air Flow Converter
S/C Supercharger
Saloon The Queen's English for "sedan"
SCC Sport Compact Car magazine
SCCA Sports Car Club of America
Scoobnuts Subaru Doughnuts
SEMA Specialty Equipment Marketers Association
SIDC Subaru Impreza Driver's Club (UK)
SIPP Subaru Internet Performance Panel
Slushbox Term of endearment for the Subaru 4EAT transmission
SOA Subaru of America
SOC Subaru Of Canada
SOJ Subaru of Japan
SOHC Single overhead camshaft engine configuration
Solo2 SCCA Autocross racing
SoNE Subaru Of New England
SPD SPD Tuning Service
Speedo Speedometer
SRP Sedona Red Pearl
SS Showroom Stock (SCCA road racing class)
STi Subaru Technica International
STM SilverThorn Metallic
STS Street Touring - Street Tire (SCCA autocross class)
SVX A high-end Subaru coupe, produced 1992-1997
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Tach Tachometer
TB Throttle Body
T/C Turbocharger
TC Trouble Code
TC Torque Converter
TCM Torque Control Module
TCU Transmission Control Unit
TDC Top Dead Center (engine phase)
TEC-II An engine management system manufactured by Electromotive, Inc.
TMIC Top Mount Intercooler
TPS Throttle Position Sensor
Trap The terminal speed at the end of a 1/4 mile run at the drag strip
Trunkmonkey See
TSB Technical service bulletin
TSD Time-Speed-Distance (a type of rallying)
TT Turbo Timer
TT Twin-turbo
TTT To The Top (see also, "bump")
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UK300 Special Limited Edition Prodrive Impreza WRX available only in England
UOR Unorthodox Racing- A tuning company
UORUD Unorthodox Racing Underdrive Pulley
UPRD Under Pressure Reasearch and Development- A Tuning company in Southern California
USDM US domestic market
UTFSF Use the F'in Search Function
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V1 Valentine One, a high-end radar detector
VASCAR Vehical Average Speed Computer and Recorder
VC Viscous Coupling (differential)
VDC Vehicle Dynamics Control, Subaru's brand of traction (yaw) control
VIN Vehicle Identification Number
VIR Virginia International Raceway
VON Vehicle Order Number (the number assigned to your car before it is asssembled, and before it is given a VIN)
VSS Vehicle Speed Sensor
VTD Variable Torque Distribution 4WD
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WOT Wide open throttle
WRB World Rally Blue (often called "real blue" )
WRC World Rally Car, or World Rally Championship
WRX World Rally Experimental
WTB Want To Buy
WTF Whiskey Tango Foxtrot (What The F---)
WTT Want To Trade
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YMMV Your Mileage May Vary (you may have a slightly different experience)
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Zeroyon Japanese reference to the 0-400m (or quartermile racing)