Spiess Tuning

Spiess Tuning is the common identity of Siegfried Spiess Motorenbau GmbH, a motor vehicle engine tuning company based in Ditzingen, Baden-Württemberg, Germany. Today Spiess Tuning is most famous for its Formula 3 motor racing engines based on the Opel Family II and two iterations of Volkswagen R4 engines.[1]

In addition, Spiess has worked on many different engines with motor racing applications, including a 4.0 litre V8 for use in the DTM Opel Vectra.[2]

References
  1. "Comeback in Formula 3". Spiess Tuning. Retrieved 2010-05-22.
  2. "DTM". Spiess Tuning. Retrieved 2010-05-22.
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