I bought a used Dinan axle back from a forum member and loved the improvement over the stock exhaust as well as the black tips. When that gets too quiet, add a Challenge Street Pipe. Used Dinan for $1500 + Challenge Street pipe for $995ish is the best sounding exhaust without messing with CEL's and such without being too LOUD. If you wanted LOUD, there are 20 different options that will deafen you.
2010 E70 X5M | Black | Black | Stock for now.
2008 E90 M3 | Interlagos Blue | Speed Cloth | Sold
2011 E92 M3 ZCP | Space Grey | Black | Sold
Last edited by iamcpap; 06-21-2012 at 03:30 PM.
Reason: add not ass...