In the final scene, it is dusk when the boys are eating dinner, but when Ari calls them it is sunny and daytime outside of his car.
Saigon's song that Turtle hears in the car and says it would make for a great ending credits song for Queens Boulevard is not what he plays for Billy Walsh.
In the scene when Turtle and Drama first go to Saigon's house, Drama tells Saigon's mother that she may remember him from "227" back in 1994. "227" ran from 1985 - 1990, not in 1994.
During the episode Ari is talking on the phone with his wife and says he would never leave her alone with his mom. However in Season 1 Episode 2 Ari tells E that he got more phone calls about a bad review than when his mom died.
In the scene when Eric meets with Mandy Moore's people, Barbara Miller tells Eric that Mandy hasn't missed a meeting in 15 years. Her publicist, Stan, say's that Mandy was "only late once, but that was during the riots". Mandy Moore would have been six years old fifteen years prior and she would've been eight years old during the L.A. riots of 1992, as well as been living in Orlando, Fl. at both times.