MKS,
That will be a good place to start. When you get on the dyno to tune your cards, watch your air fuel readings. Watch your fuel pressure on your pulls and watch your air fuel to drop off above 5000 rpm. You will most likely turn it up to keep the volume there and not go lean. If it is not turned up enough it will cause your readings to move upwards(lean...etc 13.0 to 1) Try to adjust your fuel pressure like I said above and then you can adjust your fuel trim with your laptop. If you make changes with your program and it does not change your readings, it will most likely be related to fuel volume. I just finished a stock '97 GTS with the 8# kit and I made 618 and 633 at the rear wheels on a 12.0 to 1 reading across the power band. Try to keep your readings in the 11.8 to 12.0 area for a nice safe tune. If you do that, you will have a totally different car....good luck and hang on !!!
Later,
Joe