The fourth-generation Toyota Supra, available in the United States for the 1994 through 1998 model years, has almost mythical status in automotive culture. Also known as the MKIV and its internal designation A80, the Japanese grand tourer has amassed a massive tuning scene. Its 2JZ 3.0-liter inline-six powerplant has been taken apart and put back together by engine builders all over the world to extract as much power as possible. However, the MKIV Supra’s huge popularity has led to the emergence of many tuning myths and so-called “facts” spreading across enthusiast forums.