My friend has an older 3000 GT with some nice speakers and his back panel speakers sound bad so he bought some sound baffels. He ran the program and then he is going to run it again after he installs the speaker baffels. Another good tool to see if the changes he makes do anything to help or hinder the sound.
I think it will rob all the bass but it might flatten the overall sound similar to the ford componet speakers. He is planning to run a sub later also.