Re: 0-60
My 2003 A6 2.7T has a smaller engine than both, but with the stock twin turbos and a chip puts out 318hp. That's stage 1. The stage 3s are up in the 400-500 range. Unfortunately, my little piglet weighs almost two tons so she is not quick, but she is very comfortable cruising at 90+ all day. My stock SRT6 has more than kept even with some Corvettes and a Rousch Mustang. She be fast enough for me as is. :-)