2WD - Two Wheel Drive
4WD - Four Wheel Drive
A3 - 3-speed automatic transmission
A4 - 4-speed automatic transmission
A/F - Air Fuel Ratio
APHR - Adjustable Panhard Rod (Suspension)
ATF - Automatic Transmission Fluid
AWD - All Wheel Drive
BBC - Big Block Chevy engine
BBDC - Before Bottom Dead Center
BDC - Bottom Dead Center
BHP - Brake Horsepower
BOV - Blow Off Valve (turbo related)
B/O - Bolt-On Modifications
BTDC - Before Top Dead Center
BTW - By The Way
CATS - Catalytic Converters (emissions/exhaust system)
CAI - Cold Air Induction
CI - Cubic Inches (engine displacement)
CKP - Crankshaft Position (sensor)
CMP - Camshaft Position (sensor)
CR - Compression Ratio
DEG - Degrees (timing or temperature)
DR's - Drag Radial Tyres
DSL - Driveshaft Safety Loop
DTC - Diagnostic Trouble Code
ECM - Engine Control Module
ECL - Exhaust Lobe Center Line (camshaft)
ECT - Engine Coolant Temperature (sensor)
EGR - Exhaust Gas Recirculation (emissions system)
EGT - Exhaust Gas Temperature
E/T - Elapsed Time (drag racing time measurement)
FI - Forced Induction (turbos, superchargers)
FMIC - Front Mounted Intercooler (turbo)
FPR - Fuel Pressure Regulator
FPSS - Fuel Pressure Safety Switch
FRC - Fuel Rail Covers
FWD - Front Wheel Drive
FWIW - For What Its Worth
H/C - Heads and Camshaft
HO2S - Heated Oxygen Sensor
HP - Horsepower
IAC - Idle Air Control (solenoid)
IAT - Intake Air Temperature (sensor)
ICL - Intake Lobe Center Line (camshaft)
IGN - Ignition
IMHO - In My Humble Opinion
IRS - Independent Rear Suspension
K&N - Brand name of air filter
KR - Knock Retard (tuning)
LCA - Lower Control Arm (suspension)
LMAO - Laughing my ass off
LOL - Laughing out loud
LT1 - Generation 2 GM smallblock V8 engine (introduced 1992)
LT4 - Generation 2 GM smallblock V8 engine (introduced 1996)
LT5 - GM/Lotus/Mercury Marine joint collaboration project, DOHC 5.7L V8 engine found in the Corvette ZR-1 (introduced 1990)
LS1 - GM 5.7L small block
LS2 - GM 6.0L small block
LSA - Lobe Seperation Angle (camshaft)
LT - Long Tube Headers
LTFT - Long Term Fuel Trim (tuning)
LTRIM - Long Term Fuel Trim (tuning)
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M6 - 6-speed transmission
MAF - Mass Air Flow sensor (measures amount of air entering intake)
MAP - Manifold Absolute Pressure (sensor)
N/A - Naturally Aspirated (all-motor)
N20 - Nitrous Oxide
NOS - Nitrous Oxide Systems (brand name)
NWS - Not Work Safe (do not click link if you are at work, unsuitable material inside)
O2 - Oxygen Sensor
PCM - Powertrain Control Module (your vehicles engine/tranny computer)
PCV - Positive Crankcase Ventilation (emissions system)
PE - Power Enrichment (tuning)
PHR - Panhard Rod (suspension)
PITA - Pain In The Ass
POS - Piece Of ****
P/P - Ported And Polished
ROFLMAO - Rolling On Floor Laughing My Ass Off
RPM - Revolutions Per Minute (engine speed)
RWD - Rear Wheel Drive
RWHP - Rear Wheel Horsepower
RWTQ - Rear Wheel Torque
SAE - Society of Automotive Engineers
SBC - Small Block Chevy engine
SC - Super Charger
SES - Service Engine Soon lamp (on dash)
SFC - Subframe Connectors
SOTP - Seat Of The Pants
SS - Super Sport
STB - Strut Tower Brace
STFT - Short Term Fuel Trim (tuning)
STRIM - Short Term Fuel Trim (tuning)
T56 - actual part name for the M6 transmission
TB - Throttle Body
TBODY - Throttle Body
TC - Torque Converter
TDC - Top Dead Center
TFP - Transmission Fluid Pressure (switch/valve)
TH350 - Turbo Hydromatic 3-speed automatic transmission
TH400 - Heavy Duty Turbo Hydromatic 3-speed automatic transmission
TP - Throttle Position
TPS - Throttle Postion Sensor
TQ - Torque
TT - Twin Turbo
TTOP - T-Top roof
TTT - "To The Top"
UCA - Upper control arm (front suspension)
VATS - Vehicle Anti-theft system (coded chip in ignition key)
VERT - Convertible
VSS - Vehicle speed sensor
WB O2 - Wide Band Oxygen Sensor
WOT - Wide open throttle
WTB - Want to buy
WTF - What the ****?
WTT - Want to trade
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