Your flowmaster sounds louder, more racy judging from the videos. From this rear video you can hear what sounds like a deeper and mellower tone. That's just from vid tho but the f.m. sounds crisper. Then again that f.m. I heard on yours had a turndown on it too.
http://www.youtube.com/watch?v=b_moZvjymYI
Silly me, I have never driven a Q and didn't know that the auto trans actually chops the throttle while it shifts. That is so bad ***. Looks like an auto trans for me! BTW, is the stock Q auto shifter cable or linkage actuated?