The BMW 3-Series has earned a reputation as an affordable and easily modified sports sedan. It can be modified and equipped with performance equipment yet remain street legal or be easily converted back to daily driver status. Created to serve the needs of the weekend mechanic, this illustrative manual offers 101 projects an enthusiast can do to modify, maintain, and enhance the performance of a BMW 3 Series sports sedan. It focuses on the 1984–1998 E30 and E36 models, which are numerous and popular among performance-minded owners. Along with how-to information, this book discusses pitfalls to avoid and costs associated with performing an expansive array of weekend projects.