No re-encoding of assets, meaning original textures and sounds are preserved.

The standard release of NFS Carbon was great, but the was the definitive package. Released as a bonus for hardcore fans, the CE included a significant amount of content that was locked behind a paywall or simply unavailable in the base game.

It seems you are referring to a specific video game, "Need for Speed: Carbon Collectors Edition," and a repackaged version by someone or a group known as "Mr" (likely a repacker or uploader). I will provide a general piece of writing about this game and its repackaged versions.