[Coupdetat]

Hello All, My 1st post. Please tell me if this should have been posted elsewhere.

As you know, the OEM glass is expensive. I am initially inclined to by one the seemingly well reviewed $30 blue tinted glass.
1) Does anyone know if adding a non-dimmable mirror will cause a computer code issue?
2) If no code issue, I actually like the idea of the Euro spec options with blind spot. (We all know, these cars are better to look at than out of) Anyone with experience here, please chime in.
3) I might just bite the bullet and spend the $700 plus for OEM but it looks like the Euro spec OEM are no longer available. Once again, anyone help is appreciated.
I do want to keep my car as stock as possible, but thought mirrors might not matter.

2006 Z4 MCoupe Interlagos/Black w/Carbon Leather trim and Stromung Exhaust