Just installed mine this morning. Start up is teriffic as well as acceleration. Nice low, deep tone. Like RS-ZEE said, there are some loads that are a bit too heavy for me. I'm going to look into sound dampening the trunk area without the expense of Dynomat. Perhaps I'll wait a bit for the pipes to season...
My biggest probelm: Where to hide the stock mufflers so my wife won't know what I've done!
Okay, my mod fever has subsided, for now.