SpeedFilm can insteall a clear bra on your E90.
http://www.speedfilm.net/
They mainly do work for Hennessy Porsche, but Tim will come out and perform an individual install at your site (home or office). Most importantly, they use pre-cut Xpel templates. I had Tim install a full kit on my E90 back in November. Kit included full front bumper, partial hood/fenders, mirrors, and top loading area of rear bumper near trunk.