Faking It: Engine-Sound Enhancement Explained Interesting article from Car and Driver and they use the Boss as an example.
http://www.caranddriver.com/features/faking-it-engine-sound-enhancement-explained-tech-dept?mag=cdb&list=nl_dvr_news&src=nld&date=092615
http://www.caranddriver.com/features/faking-it-engine-sound-enhancement-explained-tech-dept?mag=cdb&list=nl_dvr_news&src=nld&date=092615