headunits

Hi there, I just got my Pioneer SPH-DA360DAB for my 1999 BMW 530 ( aka pre-facelift BMW E39 ). I hope you all know that Pioneers have "day" and "night" display brightness mode for headunit. For some reason once i enable auto-detection for these modes, these modes jump back and forth every like...

I recently brought a SUV and im looking to switch out my factory speakers, I'm looking for some 6x9s that are going to give me that crisp clean sound they will be powered buy a rockford T400-4 and my currect headunit is a pioneer avh-p4400bh. appreicate all opinions