Named on Car and Driver's 10-Best list for 19 consecutive years, the BMW 3 Series has set and reset the benchmark for performance within the sports sedan segment, for generations. The 2011 model delivers between 230 horsepower (hp) and 320 (hp) and starts between $37,650 MSRP, depending on specific model and trim. Now, BMW is planning to offer 335i drivers even more power in the form of an all-new performance package...