When you run your car at a dyno, you will get hp & torque at the wheels not at the flywheel. And, that's it... So, you might be a little surprised as to how low your performance had gone. That's just because it measures performance at the wheels... which is a more meaningful figure imho...
For Chicagoland dynos (& surrounding area), this thread in the Central U.S. board...
Dyno tuning in Chicago area?