A fartbanger is defined as a 4 cylinder (4 banger) front wheel drive car equipped with an oversized muffler. It literally sounds as if someone is farting in an empty beer can. Typically these vehicles are driven by inexperienced drivers who derive thier skills and value set from playing Grand Theft Auto and watching Fast & Furious.
In example, any older model front wheel drive car is a perfect candidate to become a Fartbanger. Just hacksaw off the factory exhaust, slap on a crappy piece of junk megaphone type muffler and viola... You have a Fartbanger. Oh, don't forget to add a really dumb looking spoiler and maybe some stickers too.
A Feitzinger is most likely German with some type of Italian. They are outgoing and clinically insane, but they still throw good parties. They are hard workers apart from there bad habits and know what they have to do before they spend all there money on drugs. American Feitzinger dwell in New York and the luck ones have made it off Long Island to grace the rural towns of Upstates NY. But traditionally they are raised on the Island.