Nissan Skyline Abbreviations

GT - Grand Touring
GTE - Grand Touring Economy
GTS - Grand Touring Sports
GTR - Grand Touring Racing
4WD, Four - Four Wheel Drive
2WD - Two Wheel Drive
4WS - Four Wheel Steering
EGI - Electronic Gasoline Injection
OHC - Over Head Cams
DOHC - Double Over Head Cams
PS - Japanese Metric Horsepower
Man. - Manual Transmission
Auto. - Automatic transmission
HICAS - High Capacity Active Steering
ATTESSA ETS - Advanced Total Traction Engineering System for All - Electronic Torque Split

Engine:
RB - Series of Engine
20/25/26 - Displacement (20 - 1998cc / 25 - 2498cc / 26~2568cc)
D - Double Overhead Cam (or DOHC)
E - EGI (Electronic Gasoline Injection)
T - Turbo
TT - Twin turbo

RB26DETT
RB - Engine Series
26 - Displacement 2.6l
D - Valvetrain (DOHC)
E - EGI (ECCS) - Electronic Gasoline Injection
TT - Twin Turbo