Not that bad. It varies, but maybe once every few hours the most frequent. Some days it doesn't happen at all.

I didn't remove the Sirius receiver, just unplugged it completely - including power. I also ran ground to one of the "official" ground points, behind the passenger kick panel. That seemed to help a lot.

 

It's been known for some time that the mito pieces are ****. Want zero issues/headaches? Stay stock. Or rip everything out and go full aftermarket.

 

Heh, my stock head unit would restart randomly. I'll take 2 seconds of no audio over a 2 minute reboot.

And the unit sucks anyway. You can browse around Sirius while driving all you want, but you cannot browse your USB stick if you're moving an inch. Playing music off USB is the main way most people use their library but you have to be stopped to use it. Right. I ripped that crap out as the first mod to the car.