1080p: Audi RS6 Avant vs BMW M5 with ECU and aftermarket muffler (Dinan)

From: GTBOARD.com

Added: 16 years ago · 1:56 · 480p

http://www.m5board.com/vbulletin/e60-m5-e61-m5-touring-discussion/128188-video-2nd-bmw-m5-sepang-bronze-dinan-exhaust ...