The undercover police car Bo and Duke drives changes from a Dodge to a Plymouth.
The film is supposed to take place in 1981, yet Stephen Baldwin gets a phone call on a cell phone which did not exist in that era until the mid 1980's.
The police stations back in the early 1980's were dirty and decaying. In this film, they are too clean and neat.
New York City especially areas around the Bronx, Harlem and the Upper West Side were filled with garbage on the streets, graffiti and burnt out abandoned tenements. In this film, these areas depicted are too neat clearly obvious that the film was not shot in New York.