How much power can an S5 na motor produce. I have all the parts to convert my present S4 to an S5. I was wondering how much power I can expect to have. I also was wondering since it a na what kind of exhaust should I use. The car is going to be a weekend car something I can take to the track.

Also in converting an S4 to an S5 someone told me I had to swap the harness that goes to the guages.