No team has ever been accused of, or found to have been cheating in a Super Bowl.
buffalo bills
Miami Dolphins
Dallas Cowboys 8
Dallas Cowboys with 8.
No, not recently.
If you mean in one game, in Super Bowl 24 the 49ers scored 55 to the Broncos 10 for the most points scored by one team in the Super Bowl.
As of 2010, Detroit, Cleveland, Houston and Jacksonville have never been to the Super Bowl.
As of Super Bowl XLIII, that was the Seattle Seahawks in Super Bowl XL.
The Steeler completed the most passes in Super Bowl 45.
The Cowboys with a total of 8 Super Bowl appearances.
The Dallas Cowboys and the Pittsburgh Steelers have been in the Super Bowl 8 times each. See link for details.