Added a few that others have suggested.
Did not add ones not related to the car ..... because ... just because
..... and that they can be goggled.
ABS = Anti-lock Brake System
BG = Bowling Green (KY)
C4 = A Corvette MY 1984 to 1996
CCM = Central Control Module
CHP = Crankshaft Horse Power
DOHC = Double Over Head Cam
DRM = Doug Rippie Motorsports
ECM = Electronic Control Module (or is it Engine Control Module?)
ET = Elapsed Time
FBI = (Fast Boyz of Illinois) ???
FSM = Field Service Manual
HVAC = Heating, Ventilation and Air Conditioning
IH = Injector Housing
INFL REST = Inflatable Restraint (air bag)
LPE = Lingenfelter Precision Engineering
LSV = Lingenfelter Super Vette
LTPWS = Low Tire Pressure Waring System
MY = Model Year
NCM = National Corvette Museum
ODB I & II = On-Board Diagnostics one and two
OP = Original Post or Original Poster
PKE = Passive Keyless Entry (1993-1996)
RWHP = Rear Wheel Horse Power
SES = Service Engine Soon light
SGC - South Georgia Corvettes
TT = Twin Turbo
VATS = Vehicle Anti-Theft System
WAZOO = Washington (DC) Area ZR-1 Owners Organization