WHat do all of these stand for/definition?

ecu - engine control unit
drl - daytime running light
hid - high intensity discharge
afs - ?
sri - short ram intake
cai - cold air intake
sema - specialty equipment market association
rrm - road race motorsports

 

^ such a nooob

 

just messin wit ya

 

afs-airflow sensor duhhhh

 

thanks for that i didnt know
i still havent introduced myself
maybe i should get to that part before posting info or advice to people ha

 

isnt HID High Intensity Diode as in similar to LED Light Emitting Diode considering they are more or less the same thing except the HID has a huge amount of power going through it.

 

afs could also stand for active front steering in some cars...

also...

HID is High Intensity Discharge - a form of lighting that works on the same principles as fluorescent lighting in homes/offices etc.

cheers

 

sorry to jack your thread man, but i think this might help also...enjoy!

AC = Air Conditioning Razz
PS = Power Steering
TB = also Timing Belt
TB = also Throwout Bearing (5-speeds)
WB = Wheel Bearing
IAC = Idle Air Control
IM = Intake Manifold
IC = Intercooler
SMIC = Side Mount Inter-Cooler
MAF/MAS = Mass Air Flow/Mass Airflow Sensor (same thing)
DIS = Distributorless Ignition System
CAS = Cam Angle Sensor
CAS/CS = Crank Angle Sensor/Crank Sensor
IAT = Intake Air Tempurature (sensor) inside the MAS
BS = Barometric Sensor (inside the MAS
BS = Balance Shafts (on 4G63/4 model engines)
CW = Crank Walk (excessive/out of spec. side-to-side crank shaft movement)
inj = Fuel Injectors
EGT = Exhaust Gas Tempurature
DP = Down Pipe (exhaust)
WG = Wastegate (turbo exhaust)
cat = Catalytic Converter (exhaust)
A/F = Air/Fuel Ratio
AF = Air Flow/Air Filter
CC = Combustion Chamber
CC = Cubic Centimeters ?
CI = Cubic Inches
CR = Compression Ratio
PSI = Pounds/Square Inch
OHC : overhead cam
SOHC : single overhead cam
DOHC : double overhead cam
8V : eight valve [ 2 per cylinder, one exhaust, one intake.}
12v : twelve valve [ usually two intake, one exhaust.]
16v : sixteen valve [ two each of exhaust and intake. These terms pertain to Rage four cylinder engines from 1st gen on up.]
HYD. : hydraulic tappets or lifters
SLD. : solid or flat tappet lifters
RLR. : roller tappets

I-4 : inline four cylinder engine [ also can be seen as i-4.]
H4 : horizontily opposed four cylinder engine [ also can be flat 4 or box engine configuration. Subies and old air cooled VW 's have these.]
V-6 : V shape cylinder configuration engine.[ We all know this one, don't we?]

AT : automatic transmission
MT : manual transmission
FWD : front wheel drive
RWD : rear wheel drive
AWD : all wheel drive [ also known as 4wd.]
LSD : limited slip differential [ also known as non-slip or posi-traction and a mind altering drug from the '60's.]

WOT : wide open throttle
BHP : brake horsepower
WHP : wheel horsepower
SUHC:Single Under Head Cam (in the center of the block) ...usually found in the likes of 6 cyl. Holden engines and the old mitsi engines...
EFI :electronic fuel injection
MFI :multipoint fuel injection
TBI :throttle body injection
ITB :individual throttlebodies
VIN :vehicle identification number
Int :interior
Ext :exterior
SRS :supplimental restraint system
HU :head unit

DSM iamond Star Motors
FMIC = front mount intercooler
TMIC = top mount intercooler
TB = throttle Body
IACV = Idle air control Valve
TPS = Throttle Position Sensor
S-AFC = Super Air Fuel Controller
CatBack = Exhaust starting from the cat to the exhaust
EGR = Exhaust Gas Recirculation.

 

you're welcome...