Thread: TECH REFERENCE
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#1: 04-15-2004, 05:55 PM
Tech Reference
 
 SUBE555
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Title: Test Driver
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Part 1: General Subaru & Legacy Info

Considering there are generally many questions, what body style is what, what did this model contain, yada, yada, here is some info to explain things. It will be updated as time presents itself and details become available. I will do my best to explain info. If something somehow seems inaccurate, feel free to voice!

Basic Terminology & Acronyms
4EAT – Four Speed Electronic Automatic Transmission
5MT – Five Speed Manual Transmission
5EAT – Five Speed Electronic Automatic Transmission (includes Sportshift)
6MT – Six Speed Manual Transmission
ABS – Anti-lock Braking System
AT – Automatic Transmission
ATF – Automatic Transmission Fluid
AutoX – Autocross
AVCS – Active Valve Control Sysem
AVLS – Active Valve Lift System
AWD – All Wheel Drive
BHP – Brake HorsePower (measured BEFORE transmission)
BOV – Blow Off Valve
CAI – Cold Air Intake
Cat – Catalytic Convertor
CEL – Check Engine Light
CF – Carbon Fiber
CO2 – Carbon Dioxide
Diff – Differential
DOHC – Dual Overhead Camshaft
EBC – Electonic Boost Controller
ECT - Electronically Controlled Transmission
ECU – Electronic Control Unit (engine control unit)
EFI – Electronic Fuel Injection
EG – Subaru 6-cylinder engines (up through mid to late 90’s)
EG33 – Subaru 3.3 litre 6-cylinder engine code (SVX)
EJ – Subaru 4-cylinder engines (early 90’s and newer)
EJ20 – Subaru 2.0 litre 4-cylinder engine code
EJ205 – Subaru 2.0 litre turbo engine (US WRX)
EJ22 – Subaru 2.2 litre 4-cylinder engine code
EJ25 – Subaru 2.5 litre 4-cylinder engine code
EJ255 – Subaru 2.5 litre turbo engine (US Forester XT, Baja Turbo)
EJ257 – Subaru 2.5 litre turbo engine (US WRX STi)
EZ – Subaru 6-cylinder engines (post EG series H6 engines)
EZ30R – Subaru 3.0 litre 6-cylinder engine code (BL/BP Legacy and new Outback)
FDR - Final Drive Ratio
FMIC – Front Mount Intercooler
FWD – Front Wheel Drive
H4 – Horizontally Opposed 4 cylinder (boxer)
H6 – Horizontally Opposed 6 cylinder
HID – High Intensity Discharge (headlights)
JDM – Japanese Domestic Market
LSD – Limited Slip Differential
MAF – Mass Air-Flow Sensor
MAP – Manifold Absolute Pressure Sensor
MBC – Manual Boost Controller
MIL – Malfunction Indicator Lamp (CEL)
MT – Manual Transmission
MY – Model Year
OE – Original Equipment
OEM – Original Equipment Manufacturer
RallyX – Rallycross
RWD – Rear Wheel Drive
SOA – Subaru Of America
SOHC – Single Overhead Camshaft
TMIC – Top Mount Intercooler
TT – Twin Turbo
UDP – Under Drive Pulley
VDC – Vehicle Dynamic Control
VIN – Vehicle Identification Number
VTD – Variable Torque Distibution
WHP – Wheel HorsePower
WOT – Wide Open Throttle
Thanks to Uncle Meat of the Cobb Tuning WRXForum.com


JDM (Japanese Domestic Market) Info:
Twin-Turbo: This is one of the most loosely used term. Everyone wants a twin-turbo because Japan has had it. It was a sequential setup with one turbo used for the low end, while a larger turbo was used for the high end. However, it wasn’t the most optimal solution being its cost, complexity, and between the 1st to 2nd turbo transition, there was a decent dip in power. It has been proven that other solutions are more cost-effective and produce better results in general.

More on turbo tech below.

B4: The term used for sedan since the 1998 model year.

B4 RSK: The name given to the turbocharged sport Legacy Sedan in the 1998 to 2002 model years. Remember, Japan has been even further ahead in model changes. They receive their models 2 model years (or MY) ahead of the U.S.

Note: Previous to the BE-generation B4 RSK, the sedan turbo models were called ‘RS’.

GTB: The name given to the turbocharged sport Legacy Wagon in the 1993 to 2002 model years that used the sportier Bilstein suspension.

S401: The ONLY STi production Legacy to date. This 2003 BE sedan model was produced in a short-run and were rather expensive. It contained much gear from the current year Impreza STi though mostly in drivetrain and brakes. It still retained a sequential twin-turbo setup though with a few more ponies. It also received some suspension modifications including Bilstein struts along with BBS 18x7” wheels.


Body Styles (by USDM MY):
Sedans
BC (1990-1994)
BD (1995-1999)
BE (2000-2004)
BL (2005-2009)

Wagons
BF (1990-1994)
BG (1995-1999)
BH (2000-2004)
BP (2005-2009)

Last edited by SUBE555; 04-28-2005 at 05:32 PM..
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