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Bob Mg......Does going catless add resonance inside? Ive spoken to several local tuners and they all say going catless adds lots of power and lots of unwanted interior drone. You're one of the few people who can speak from experience about this vehicle........
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2014 M5...AMS downpipes, BMS tune, lead foot
2011 X5M....Downpipes, exhaust, dyno tuned
2008 Ducati 848....pearl white, Termignoni exhaust
CLS55 and C6Z06 (previous rides)
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