horsepower

How much does changing the timing effect your horsepower? I got a 98 gt last week and it has one of the steeda timing adjuster installed on it that has been advanced to 14 degrees. The only other horsepower mods are a basani catback exhaust and k&n filter, I know how much hp they supposedly add but have no clue about the timing. Anybody know?

I'm not really sure what kind of numbers you gain fromit(not much either way). It really just changes your power band a bit.