Bavarian Performance Group (BPG) was founded in 2004 in Stoneham Massachusetts. BPG moved to Winchester MA in 2007 outfitting their new building with the latest and greatest tools and equipment to service your BMW.br Bavarian Performance Group LLCbr 1034 Main Streetbr Winchester, MA 01890br Tel: 781 368 9040br mail: info@bavarianperformancegroup.