Hi guys i recently bought a new M3 2011 ZCP, it came with a rear tubi rumore exhaust system. I came from a 2008 M3 with Rpi GTM axleback and a custom secondary cat and resonator delete. And that thing screamed and had the perfect sound. I was just wondering if i can order a sosi x pipe or something to pair with the tubi rear to make it louder and have that F1 sound at high rpms. Before i wanted to do it, i wanted to see if any one else has tried this or heard it in person. I was trying to stay away from spending 1000$ on full front pipes. Let me know thanks!