Tuning acronyms

As I've been reading over this tuning stuff, I was finding myself stumbling sometimes over the various acronyms these guys would throw around with wild abandon that I didn't have a clue about what they meant. So I had to make up a cheat sheet that I could refer to when I hit one I didn't remember what it actually meant.

A

• ABS - Antilock Brake System
• AFR - Air Fuel Ratio
• AIR - Secondary Air Injection

B

• BARO - Barometric Pressure
• BCM - Body Control Module
• BEN - Base Efficiency Numerator
• BHP - Brake Horsepower

C

• CAC - Charge Air Cooler
• CARB - California Air Resources Board
• CAS - Crank Angle Sensor
• CC - Catalytic Converter
• CCP - Controlled Canister Purge
• CCV - Canister Control Valve
• CFI - Continuous Fuel Injection
• CFM - Cubic Feet per Minute
• CID - Component ID
• CID - Cubic Inch Displacement
• CKP - Crankshaft Position
• CL - Closed Loop
• CMP - Camshaft Position
• COP - Coil On Plug Ignition
• CP - Canister Purge
• CTP - Closed Throttle Position

D

• DBC - Drive By Cable
• DBW - Drive By Wire
• DFCO - Deceleration Fuel Cut Off
• DFI - Direct Fuel Injection
• DMA - Direct Memory Access
• DTC - Diagnostic Trouble Code
• DTM - Diagnostic Test Mode

E

• EBCM - Electronic Brake Control Module
• EBTCM - Electronic Brake Traction Control Module
• EC - Engine Control
• ECL - Engine Coolant Level
• ECM - Engine Control Module
• ECT - Engine Coolant Temperature
• EECS - Evaporative Emissions Control System
• EFE - Early Fuel Evaporation System
• EFI - Electronic Fuel Injection
• EGR - Exhaust Gas Recirculation
• EGRT - Exhaust Gas Recirculation Temperature
• ESC - Electronic Spark Control
• EST - Electronic Spark Timing
• ETC - Electronic Throttle Control
• EV-ETS - Electric Vehicle Energy Transfer System
• EVAP - Evaporative Emission System
• EVRV - Electronic Vacuum Regulator Valve for EGR

F

• FFTC - Freeze Frame Trouble Codes
• FI - Fuel Injection
• FT. LB. - Foot Pound
• FT - Fuel Trim
• FTC - Fuel Trim Cell #
• FUBAR - Farked Up Beyond All Recognition

G

• GND - Ground
• GPS - Grams Per Second
• GVM - Gross Vehicle Mass

H

• HEGO - Heated Exhaust Gas Oxygen Sensor
• Hg - Mercury
• HO2S - Heated Oxygen Sensor
• HVAC - Heating Ventilation and Air Conditioning

I

• IA - Intake Air
• IAC - Idle Air Control
• IAT - Intake Air Temperature
• ICM - Ignition Control Module
• IFI - Indirect Fuel Injection
• IFS - Inertia Fuel Shutoff
• IGN - Ignition
• IIIBDFI - If It Isn't Broke, Don't Fix It
• ISC - Idle Speed Control

J

K

• kHz - Kilohertz
• KISS - Keep It Simple, Stupid
• KOEC - Key On, Engine Cranking
• KOEO - Key On, Engine Off
• KOER - Key On, Engine Running
• kPa - Kilopascals
• Km - kilometers
• KR - Knock Retard
• KS - Knock Sensor
• KSM - Knock Sensor Module

L

• LTFT - Long Term Fuel Trim
• LTIT - Long Term Idle Trim

M

• MAF - Mass Air Flow
• MAP - Manifold Absolute Pressure
• MDP - Manifold Differential Pressure
• MHz - Megahertz
• MIL - Malfunction Indicator Lamp
• MPG - Miles Per Gallon
• MPH - Miles Per Hour

N

• NOX - Nitrous Oxide

O

• O2S11 - O2 Sensor Voltage Bank 1, Sensor 1
• O2S21 - O2 Sensor Voltage Bank 2, Sensor 1
• OBD II - Onboard Diagnostics, Second Generation
• OEM - Original Equipment Manufacture
• OL - Open Loop

P

• PAIR - Pulsed Secondary Air Injection
• PCM - Powertrain Control Module
• PCV - Positive Crankcase Ventilation
• PFI - Port Fuel Injection
• PID - Parameter Identifier
• PRN - Parameter Reference Number
• PTC - Pending Trouble Code
• PWM - Pulse Width Modulation

Q

R

• RAFIG - Required Air Flow In Gear
• RAFPN - Required Air Flow In Park/Neutral
• RAM - Random Access Memory (read/write)
• ROM - Read Only Memory
• RPM - Revolutions Per Minute (Engine Speed)

S

• SAE - Society of Automotive Engineers
• SC - Supercharger
• SFI - Sequential Fuel Injection
• SLOT - Scaling, Limit(s), Offset and Transfer
• SMS - Specifically Monitored Systems
• SPARKADV - Spark Advance
• SRS - Supplemental Restraint System
• SRT - System Readiness Tests
• STFT - Short Term Fuel Trim
• STIT - Short Term Idle Trim

T

• TAC - Thermostatic Air Cleaner
• TAC - Throttle Actuator Control
• TB - Throttle Body
• TBI - Throttle Body Injection
• TC - Turbocharger
• TCM - Transmission Control Module
• TID - Test ID
• TP - Throttle Position
• TPMS - Tire Pressure Monitor System
• TPS - Throttle Position Sensor
• TVV - Thermal Vaccum Valve

U

• USB - Universal Serial Bus

V

• VIN - Vehicle Identification Number
• VPW - Variable Pulse Width
• VR - Voltage Regulator
• VSS - Vehicle Speed Sensor

W

• WOT - Wide Open Throttle
• WSS - Wheel Speed Sensor

X

Y

Z

If you guys see any errors or needed additions, please let me know. I will edit this list as necessary to make corrections or additions.