Audio in 2003 Saab 93 2.0t Linear - 7 speaker system

[ciapost0610]

I've read plenty of links on here talking about how most of us agree the stereo is lacking in these cars. From what I've read, the stereo is not allowing full range of sound to all of the speakers. Is there an "easy" way to allow this? I've upgraded all of my speakers and honestly, it's not made that big of difference. I've heard you can add a sub by tapping in to front speaker signals, adding an aftermarket head unit and then running all new wires, etc. I'm good with the 7 speakers, but is there any "software" upgrade or Tech 2 reprogramming that would disable the filtering? Just curious. Thanks.

[dspargo]

Unfortunately no.