We were never fond of performance packages that companies offer for their sports models because to be honest the effect they have on the performance of the machine is so insignificant, considering the amount of money they charge you. With BMW though, it’s a bit different. As shown in this video, their performance packages do really work! On the M3 for example, the package it transforms it to a different animal that sound more aggressive, looks much cooler, and goes like hell. But as mentioned, it’s not cheap. A set of M sport exhausts for instance cost nearly $5k bolted on.