Quote:
Originally Posted by mrbmwx5
These mufflers has more free flow than 4.4i mufflers.
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Waiting on my AFE cold air intake & Dinan High Flow Air Mass meter to arrive!
Just wondered if $400 would be an upgrade on my current exhaust.
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2005 545i Sports/Prem Package
(Retired) 2003 X5 4.4i-sport package, cold weather package, OEM trailer hitch, 20' replica metallic pewter 215's, X-pipe, Navi w/ custom splash (MUFC logo), cross drilled brembo rotors with Akebono ceremic pads.
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