Z31 specific:

• ae: 84 anniversary edition
• ss(or se): 88 "special edition" (nissan calls it the SS, not SE)
• chts: cyclinder head temperature sensor
• 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).

• 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.
• nt, na, non-t: non-turbo, normally aspirated, non-turbo
• t: turbo
• lsd: limited slip differential
• vlsd: viscous limited slip differential
• fpr: fuel pressure regulator
• 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.

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