text: 1981 A turbocharged model, using the L28ET engine rated at  at 5,600 rpm and 203 ft•lbs (275n•m) of torque at 2,800 rpm, was introduced to the US export market in 1981. At the same time the Japanese domestic market received L20ET (2 L turbo) in both manual and automatic transmissions. Nissan's concerns about the reliability of their own five-speed transmission when combined with the additional torque of the 2.8 L turbo engine, meant that no manual transmission was offered with the L28ET engine for the 1981 model year. Other export markets (Europe and Australia) continued to receive only the normally aspirated 2.8 L engine with manual or automatic transmission. This engine was considered too powerful to receive type approval by Japan's Ministry of Transportation, who would only allow turbochargers to be installed in sub 2 litre-engined cars, and it was therefore never sold in its homeland.
  The turbocharged 280ZX used a single Garrett AiResearch TB03 turbocharger with an internal wastegate, and no intercooler. Nissan's design philosophy at the time led to boost being limited to 6.8 psi (0.47 bar), despite the lowered compression of the turbo engine (7.4:1 with dished, cast aluminum pistons). Additional changes over the naturally aspirated engine included a higher volume oil pump, an oil cooler on automatic models, and Nissan's Electronic Concentrated Control System (ECCS).
  At the time of its release into the US market, the 280ZX turbo was the fastest Japanese import on the American market. The turbocharged 280ZX with a three-speed automatic delivered  times of 7.4 seconds and a very respectable quarter mile time of 16.6 seconds, at a top speed of .