HD: Porsche 911 GT3 CS (996 MkI) vs BMW M5 E39: M5BOARD.com
HD: Porsche911 GT3 RS (996 MkI) vs BMW M5 E39: M5BOARD.com: http://www.m5board.com/vbulletin/e39-m5-e52-z8-discussion/135128-high-definition-porsche-911-gt3-rs-996-mk-i-vs-bmw-m5-e39.html#post1545449
BMW M5 had ECU and Kelleners exhaust.
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