Good Day!
I also campaign a 2005 Xfire but for DSP. You can get more speed in second gear by using OEM tune (which comes with $4k guarantee) which allows an additional 1100 RPM. I am sure I have the specs somewhere but it adds about 17 HP and 39ftlbs torque on 93 Octane. 100 Octane tune is a bit better. Also adding the SLK throttle body helps. Currently adding Spec 3+ clutch set up.