I was up at a 'vette meeting today, did a quick run with one guy in his 07, stock motor with different cat-back, hi-flow cats ... ran pretty nicely, but the stock T43 A6 tune is a piece of crap - when he used the paddle shift to change gears, it took almost as long as on a Smart car ... he said they already fixed that on the LS3 models ... apart from that, I must say it's a pretty nice car, smooth ride and all ...