Originally Posted by X5falcon

Not much...

I have 3.0si, and I thought chrome exhausts for 3.0si, new for 2008, would be the same ones as 4.8i, but they are not.

They just chrome plated the not-so-pretty 2007 3.0si's exhaust pipe.

I think 4.8i will be exactly the same as 2007 model.