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Frequently used Terms and Abbreviations thread

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#1 BuzzKill


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Posted 17 July 2002 - 05:25 PM

cat = catalytic converter
precat = catalytic coverter that comes right after the turbo - part of the stock "down pipe"
main cat = catalytic converter in the middle of the exhaust pipe, under middle of car
TPS = throttle position sensor
ISC = idle speed control
VA = vacuum advance
psi = pounds per square inch - usually used in reference to turbo boost, vacuum, or tire pressure
RPM = rotations per minute - this is displayed on the tachometer
bcfpr= boost compensating fuel pressuge regulator

shp=sport handling pakage
tt=turbo timer or twin turbo
dis=direct ingnition system
mpi=multi port injection
tbi=throttle body injection
na=normally assperated(no turbo or super charger, all motor)
nawz=means your a moron...he he
o2 sensor=oxygen sensor
no2 or NOS=nitrious oxide
DP=down pipe
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#2 88BlueTSiquest


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Posted 17 July 2002 - 09:08 PM

BPV = By-pass valve, like a BOV, but the BOV vents to atmosphere, the BPV vents back into the intake tubing just before the turbo and after the MAS.

MAS/MAF = Mass Airflow Sensor, or Mass Air Flow.

1G(as used here) = First Generation, some state it refers to DSM(see next entry) cars as a whole, I state it stands for the 1st Generation of the Eclipse/Talon/Laser cars. Generally when a car is stated as 1G, it's the first ever body style/design of a specific car that lives long enough to be retooled over and over again, Such as the Corvette, Eclipse, RX7, Camaro, etc. etc. There is no Generation designation for the S/Q as it's only design was just cosmetically changed over the years, no major body/chassis change was ever implemented to create a 2G S/Q, thus necessitating the need to call the originals 1G.

DSM = Diamond Star Motors, a joint venture between Chrysler and Mitsubishi that produced cars such as the Eclipse/Laser/Talon, Stealth/3000GT etc. etc.

To add to that,

1G BOV, would simply be the "BPV" off of a 1G Eclipse/Talon/Laser TURBO, as the 1G BOV as everyone states it, was actually designed to recirculate the air, and not "Blow it off".

1G MAS, is the Mass Airflow Sensor from the 1G Eclipse/Talon/Laser TURBO's. This always refers to the Turbo versions, as the NA versions are useless to us.

#3 Technology



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Posted 17 July 2002 - 09:38 PM

TT - twin turbo
SB - small block
BB - Big Block
HEMI - Hemispherical
AFK - away from keyboard
brb - be right back
TSI - turbo sport intercooled
ESIR - euro sport intercooled rally - or something like that maybe that's: ESIR  - Euro Sport Intercooled Race or maybe Especially Super Intercooled Racecar
SOB - Son of a B...
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#4 Liondawg



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Posted 18 July 2002 - 01:40 PM

FMIC -- Front Mount Intercooler
HP -- horse power
BS -- Balance shaft or Bull$**t
BSE -- Balance Shaft Elimination
JVE -- Jet Valve Elimination
ECM -- electronic control module
EGR -- Exhaust Gas Recirculation
Tach -- Tachometer
A/F Ratio or meter -- Air/Fuel Ratio or meter
EGT -- Exhaust Gas Temp.
KVE -- Krankvent
RRFPR -- Rising Rate Fuel Pressure Regulator (see BCFPR)
EFI -- Electronic Fuel Injection
TBI -- Throttle Body Injection
MPI -- Multi-Port Injection
PCV -- Positive Crankcase Ventilation
MIG -- Metal Inert Gas
TIG -- Tungsten Inert Gas
TDC -- Top Dead Center
ATF -- Automatic Transmission Fluid
87 conquest TSi
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#5 dstar26t


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Posted 18 July 2002 - 02:25 PM

marnal = replacement heads with better casting than caravan or stock and no jet valves.

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#6 Dangerous_Dr._Dave


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Posted 19 July 2002 - 01:56 AM

IWMSL: I Wet MySelf Laughing, ;D
KYBO: Keep Your Bowels Open, nick name for an outhouse, pronounced Kï'-bõ... tongue.gif
MAP: Manifold Absloute Pressure (sensor),
More later...
Stoich: Short for Stoichiometric, which in our case refers to A/F ratio. A Stoichiometric chemical reaction is one in which all the reactants are used up most efficiently. So, Stoichiometric A/F ratio is that ratio which is just right: around 14.7:1 by mass, but this varies with load and compression and other factors. If your engine is running stoich then it's being as efficient as possible. Stoich is what the ECU strives for in closed loop operation.

Closed Loop Operation: When the ECU uses info from the O2 sensor to fine tune the A/F ratio.

Open Loop Operation: When the ECU ignores the O2 sensor because it can't be trusted or isn't practical under certain conditions, such as engine warmup, hard acceleration, deceleration, ect.
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#7 88BlueTSiquest


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Posted 19 July 2002 - 05:46 PM

MAP Sensor - Manifold Absolute Pressure sensor
IAT Sensor - Intake Air Temperature sensor
CPS - Crankshaft Position Sensor
ETACS - Electronic Time and Alarm Control System
VIN - Vehicle Identification Number
8's and 9's - Slang for the SHP wheels, 8" wide fronts, 9" wide rears.

#8 KO


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Posted 21 July 2002 - 10:47 PM

Here are some:
Posted Image Posted Image
89 TSi 14G, 2.5"Ex,21lb.Flyw, Sht.Shift, SS Hoses,1G MAS/K&N,
125psi F.Pump, Type-H BOV /H-Pipes, 9" Rears, ST's, KYB's.

2008 Toyota Tundra Crew Cab
2014 Silverado Texas Edition
2016 Escalade Platinum Edition

#9 Technology



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Posted 22 July 2002 - 07:04 PM

Isn't MAP sensor actually Manifold Air Pressure sensor?
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#10 Tim_C.


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Posted 26 July 2002 - 09:49 PM

Hey KO, that page said the Max overbore is .040 over. There are stock replacement pistons that go up to .060. Of course that is the max anyone could ever even think about going! He He!
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'96 Mitsu Mirage w/rebuilt head. Gets 35+MPG.
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#11 shedevil_onwheels


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Posted 28 August 2002 - 12:02 PM

maybe it would be helpful (To me at least) if you'd put what the thing does too, or at least a short description.  Ie.

BOV =Blow off Valve,  blah blah exhaust blah.
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#12 maxwelhse


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Posted 28 August 2002 - 10:21 PM

IAC = Idle Air Control (Valve) - A stepper motor that controls the amount of air allowed to bypass the throttle plate. (A choke)

PFT = Pretty $%^ing Tight - A torque specification used by rednecks and shade trees when tightening fasteners. Usually results in finding the failure tolerance of the fastener or casting.

That what you had in mind? smile.gif

#13 Edde


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Posted 29 September 2002 - 02:48 PM

BFH = Big %&^$*#  Hammer = used by rednecks and shade trees (hey, that's ME) to attempt corrections made as a result of the PFT spec ...
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#14 JustPaus_88TSi


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Posted 29 September 2002 - 08:35 PM

What about " WOT "?

While On Throttle?????
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#15 Edde


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Posted 29 September 2002 - 10:35 PM

I can't believe this one was missed!  The most important one! ohmy.gif

WOT=Wide Open Throttle!!!  ;D

As in, "after sufficient break-in time is allowed, always drive your quest at WOT for best results!"  ;D

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#16 blew-by-u



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Posted 23 January 2003 - 01:38 PM

This one had me stumped for awhile.

RRFPR=Rising Rate Fuel Pressure Regulator

#17 Dangerous_Dr._Dave


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Posted 06 July 2003 - 11:43 PM

What's DIS?

DIS = Distributorless Ignition System
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#18 aussiestarion82



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Posted 30 July 2004 - 10:08 PM

what is ECI? it says it on top of the TB

#19 mikec


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Posted 30 July 2004 - 10:33 PM

ECI = Electronically Controlled Injection.  Mitsu's version of EFI = Electronic Fuel Injection

#20 Metric-man



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Posted 04 August 2004 - 10:03 AM

A/C air conditioning
A/F air fuel
ATDC after top dead center
A/T automatic transmission
AWD all wheel drive
FWD front wheel drive
RWD rear wheel drive
CLOSED LOOP Engine operating mode continuously tunes air/fuel ratio for stoichiometric balance based on signals to the PCM  from oxygen sensor(s) and other sensors
CKP crankshaft position  or crankshaft position sensor
CO2 carbon dioxide
CO carbon monoxide
HC hydro carbon
NOx oxides of nitrogen
DSO digital storage oscilloscope (graphing multi -meter)
DVOM digital voltage /ohm meter
HIDVM high impedance digital voltage meter
ECT engine coolant temperature sensor
EOP engine oil pressure
EOT engine oil temperature
EGT exhaust gas temperature (sensor)
EGR   exhaust gas re-circulation
GRD ground
HP horse power
IHP indicated horse power
WHP wheel horse power
POS positive
IAT intake air temperature sensor
ICM ignition control module
IMEP indicated mean effective pressure
ISC idle speed control
MFI/MPI multi port fuel injection(MFI also known as mechanical fuel injection)
MIL malfunction indicator light or Check engine light
PCV positive crankcase ventilation
PCM  power train control module PCM is the SAE J1930 term that replaces older references to the powertrain control computer such as ECU, ECA and ECM
PFP peak firing pressure
PFA peak firing angle
MEP mean effective pressure
RPM engine speed (revolutions per minute)
SAE society of automotive engineers 100th year anniversary 1904 to 2004 organization of engineers and automotive professionals that set standards, regulations, and make recommendations for the automotive industry.
SAE J1930 an SAE paper that standardizes the name and acronyms for automotive components
STOICH stoichiometric fuel / ratio equal to 14.7 parts air to one part fuel by weight @ sea level
TQ torque
VIN vehicle identification number
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