Well, my expectations for sound quality and volume were set pretty low... this way of changing the headunit means you're still using the Bose amplifier and obviously I haven't changed any speakers, so I figured the sound wouldn't change much.
However, I have been very surprised at how much of an improvement there is! The quality is improved and the sound seems fuller. The balance of sound is improved. I guess the bass is better controlled at the source, as the sub isn't as wooly.
So yes, IMHO this is a great improvement over the stock Bose system, I'm really pleased with it
Cool, i saw you had to change the wiring but did most of it plug straight in? and did the steering wheel controls still work?