Originally Posted by THE TECH
Ok, read both manuals. Definitely a bit of work. I wouldn't take the bumper off as I don't think that's necessary. Other than that it's just mostly the usual running of wires from back to console and front to console. Just time consuming more than anything. I also see some shortcuts that could be taken. They also fail to mention that they are doing that on an E90 where the rear seats fold down so for E92s it will be a bit more time involved. All-in-all I hope it's worth the effort. My biggest concern is the dash pieces. I have all the tools needed but prying on plastic parts always gives me the chills.
I have both Front & Rear cams. I installed the front without taking off the front bumper. It was a PITA but it is do able. You need someone with small hands to get between the bumper and radiator. Make sure mark which side is up. The panels pop off pretty easy too