How much performance will I gain from the reflash?
That depends on the modifications on your car. Most people see improvements throughout the powerband. The most dramatic increase is around 5,800 rpm where wheel horsepower gains can be 15-25 and torque gains almost that much. The big midrange gain is primarily because Hondata lowers the VTEC point. There are also gains at the top of the rpm range, though they are usually less.