text: Both production blocks and head castings were used successfully in the Nissan GTP ZX-Turbo and NPT-90 race cars which won the IMSA GT Championship three years in a row.
  Origins
  Development of the VG series began in 1979 by Nissan Machinery, a former member of the Nissan Group keiretsu. The objective was to replace the inline 6 Nissan L engine, which traces its roots back to the Mercedes-Benz M180 engine introduced in 1951, with an all-new V6.
  Nissan engineers wanted the VG to have improved performance, fuel economy, reliability, and refinement, while being both lighter and more compact than its predecessor.  The resulting engine was designed by Nissan from scratch, and shared few mechanical components with its predecessor, or with any other automaker. It was added to a new engine family name PLASMA (Powerful ＆ Economic, Lightweight, Accurate, Silent, Mighty, Advanced).
  Extensive computer design techniques were used during development, which made the VG series one of the most advanced and high-tech engines of its day. It featured a sequential multi-port fuel injection system, and Nissan's Electronic Concentrated Control System (ECCS).
  ECCS used a microprocessor and an oxygen sensor to control fuel delivery, spark timing, exhaust gas recirculation rate, and engine idle speed, depending on the current operating conditions of the engine. This system reduced carbon emissions, improved fuel economy, and improved engine performance during cold-start and warm-up conditions.