I have finally decided to do some performance upgrades to my s60r. I am going to get the BSR ECU upgrade, and will be getting a DP and exhaust system as well (Suggestions?) I thought I had read somewhere that the BSR ECU is not supposed to be used on cars with a DP upgrade? Is this true or is it something I just made up? Also, who makes a good DP and exhaust? I want something with a throatier/louder exhaust sound as well as a performance benefit.