I have put this list together with the help of a few other members this afternoon for the use of any member in need of a definition to a term used on this site. If I have left any thing out please feel free to reply or Pm me and I will add it.
6i = 4 cylinder Mazda6
6S = V6 Mazda6
AAP- Accelerator Pedal Position
ABM/ Air Box Mod = The process of taking unwanted parts off the stock engine air box out to let the engine breath better
AEM = Advanced Engine Management(Brand Name)
AFAIK = As Far As I Know
AJ = Mazda 6 with 3.0l V6
AP = AccessPort by Cobb
AR = After market Rims
AT = Automatic Transmission
ATR = Access Tuner Race, tuning software for the AP
ATX = Auto Trans axle
Axle-back = Exhaust from rear axle
AWD = All Wheel Drive
BAT - Boosted Air Temp
BOV = A turbo engines blow off valve
BT- Big Turbo
Bump = Brings post to top
BPV = ByPass Valve
BSD = Balance Shaft Delete
BSF or B/S = Buy/Sell Forums
BTW = By the way
Cat back = An exhaust system that starts at the catalytic converter.
CAI = Cold Air Intake
CCC = Combustion Chamber Cleaner
CEL = Check Engine Light
CF = Carbon Fiber
Cleansweep = A audio device made by JL Audio (Brand Name)