Acronyms

List of some of the more common terms used in this wiki FAQ. Additional info from MR2OC, Fixing Cars, GTFour.

3SGE
Name of the Japanese spec naturally aspirated 2ltr engine in the Mk2 MR2. USDM spec engines carried a different designation (5SFE). (Engine Models)
3SGTE
Name of the turbo charged engine on a Mk2 MR2. (Engine Models)
4AGZE
Name of the engine on a MKI supercharged. (Engine Models)
4AGE
Name of the engine in a MKI normally aspirated. (Engine Models)
AFM
Air Flow Meter, the flapper-door type sensor used to measure the incoming air to the engine.
A-pillar
Pillar that runs between the door and the windscreen.
ATF
Automatic Transmission Fluid.
AW11
Mk1 MR2 taken from the VIN.
BGB
Big Green Book. See Owners Manuals.
BHP
(Also HP) Brake Horsepower.
Boost
What happens when your supercharger or turbocharger kicks in. Measured in “kilo pascals” (kPa), “Barometric” (Bar), or “Pounds per Square Inch” (PSI). Increased boost pressure gives more power/torque each time a cylinder fires. NA engines run at atmospheric pressure.
BOV
Blow Off Valve. Vents excess boost, when not needed by the engine, into the atmosphere for the “Psssshhhhht” sound.
BPV
Bypass Valve. Vents excess boost, when not needed by the engine, back into the air intake.
B-pillar
Vertical pillar that runs between the back of the door and the small triangle window.
Cat
Catalytic Converter. Scubs nasty emissions from the exhaust.
Cam
Camshaft. Used to convert rotational motion into linear motion. Usually used in an engine to lift the intake and exhaust valves in the cylinder head.
C-pillar
Pillar at extending beyond the rear window next to the engine bay.
Dizzy
Distributor. Distributes power to each of the sparkplugs in the appropriate firing order.
DOHC
Dual Overhead Cam. Usually has one cam for intake and one cam for exhaust valves.
EBC
Electronic Boost Controller.
ECU
Electronic Control Unit.
Frunk
Front trunk.
#Grunt BoxGrunt Box
Modification that provides an increase in torque below 3500rpm on SC cars.
HG
Head Gasket. Seals the gap between the cylinder head and the engine block.
ITB
Individual Throttle Bodies.
JDM
Japanese Domestic Market. Refers to parts or cars produced and used in Japanese models.
LSD
Limited Slip Differential.
MAP
Manifold Air Pressure Sensor - used in some Jspec mr2 motors, measures the pressure of air inside the intake manifold, which the ECU can use to calculate how much air is being consumed.
MBC
Manual Boost Controller.
MR2OC
USA forum for MR2 owners MR2 Owners Club.
NA
Normally/Naturally Aspirated (ie, not Supercharged or Turbo).
OEM
Original Equipment Manufacturer.
PCD
Pitch Circle Diameter. The distance between the centres of the holes the wheel nuts sit in.
RWHP
Rear Wheel Horsepower.
SC
Supercharged.
TPS
Throttle Position Sensor. Excellent write up at Needful Things.
TRD
Toyota Racing Development
TVIS
Toyota Variable Induction System. A set of butterflies in the intake tract that open at 4400rpm.
Turbo
Turbocharger. Produces boost by using host exhaust gas to spin a compressor turbine. Does not take engine power to run it like a Supercharger, but does take time to spin up. The stock turbo in a Mk2 MR2 is a CT26 which was originally used in some of Toyotas small trucks in the late 80’s.
#Turbo LagTurbo Lag
The time it takes for a turbocharger to reach operating speed once the throttle is opened.
USDM
United States Domestic Market. Refers to parts or cars produced and used in US models.
VIN
Vehicle Identification Number
WOT
Wide Open Throttle