I was just at the gf's house, and started my truck from in her house, and for some reason I could hear it from the basement allot louder than normal. so on my way home, everytime I got on it, it sounded so nice and chrisp, I couldnt help my self from keeping it pinned damn near the whole way home (only about a 5 minute drive)

anyone know why that is, when it gets damn cold (hovering around 0 right now) my truck gets louder?

 

Check your exhaust manifold bolts. I have 2 that are broken off on the passenger side manifold. Now that it's colder it's a lot louder until the manifold warms up and seals the gap up.