(TrendHunter.com) The Firehouse Subs BBQ Cuban Sub is a new offering from the brand that's focused on providing patrons with a premium option to try out when seeking a twist on some of their favorite flavors.... (TrendHunter.com) The Firehouse Subs BBQ Cuban Sub is a new offering from the brand that's focused on providing patrons with a premium option to try out when seeking a twist on some of their favorite flavors....