Short of a supercharger, what other performance upgrades are available for this car?

I had Jet Performance reflash my ECU and I've had a CAI built for the car, but the dyno numbers are still disappointing. I pulled 123hp & 125ft. lbs of torque at the wheels. Later I discovered that the AC was on during my pulls, but i doubt that could account for too much. Next time I'm also gonna pull with lighter wheels. Any other ideas?