Car audio innovations has been specializing in audio upgrades for porsches since 1991. we do work locally (roseville, ca/sacramento area) on all types of. Warning!!!! performing your own audio installs you do at your own risk. we cannot be held responsible for any damage that is caused from removing your. Home » products » alpine porsche 997 911, 987 boxster, cayman radio upgrade navigation bluetooth ipod usb. Contact car audio innovations, get directions to our store. car audio innovations is located in roseville,ca. car audio innovations is a unique car audio shop because. This article is one in a series that have been released in conjunction with wayne's new book, 101 performance projects for your porsche boxster.. This article is one in a series that have been released in conjunction with wayne's new book, 101 performance projects for your porsche boxster..