eccu/eccs/ecu: the engine's main computer located on the outside of the passenger footwell just in front of the door.
AFM: air flow meter(MAF: mass air flow sensor) (MAS: Mass airflow sensor)
These terms are often used interchangably, technically
MAF/MAS are mass meters(hot wire style).
General automotive:
PS: metric horsepower(1 horsepower = 1.014 PS)
TSB: Technical service bulletin. Issued by Nissan to instruct and inform dealers how to fix common problems. TSBs are not free maintenance, they are only bulletins to ensure dealers are aware of common problems and how to most easily resolve them.
pcv: positive crankcase ventilation - sucks crankcase gasses into engine to
be burnt instead of polluting the atmosphere with the noxious and carcinogenic fumes.
POV: Pop off valve. Saftey valve on intake manifold to vent boost
pressure in the event of boost control failure to prevent damaging engine.
BOV: Blow off Valve. Vacum/pressure operated valve located between throttle
and turbo to vent pressure upon rapid closings of the throttle to help
keep the turbo spinning faster and to prevent stalling the compressor
from too much outlet pressure. There is no stock BOV on Z31s.
