Where the factory mufflers are deleted is roughly 3" behind the mufflers.
Someone mentioned long tubes. This will not help the turbos, of what I have been told from STS its better to keep the factory exhaust manifold for pressure. Was going to go the shorties route with high flow cats but all its going to do is get louder and mabe pick up 1-2 horsepower. So it wasnt worth the $$$$ in my opinoin.