I just installed the bypass harness. It was weird, the square plug was incorrect and I had to modify the factory amp plug by trimming a bit off it as well as widening the holes for the pins. It was rather easy since I was able to just remove the wire from my car and modify the plug with my x-acto knife.
So, results are the sound is much, much better. With the amp in, I would turn the volume to 20/50 and reach the limit before much distortion came it. It was still decently loud, but the bass was really limited. Now with the amp bypassed I can take the volume to 40/50 and use the xplod EQ for some really decent bass. It's really made a huge difference on the low end, and really cleared up the sound.