Expecting delivery of my new E61 LCI 520D in April and have a number of questions which perhaps some of you more experienced hands could let me have;

- Any special running in guidelines for this car ? I don't want it to be a slouch.
- Should I do an oil and oil filter change well before the regular service to get rid of any initial dirt from bedding-in ?
- I'd eventually like to chip the car to have something like the pull of the a 525D. I've read good things about Superchip and Kempower. Anyone here in Europe have personal experience with these chips on a 520D or can suggest a better set up ?
- Vanity question - where can I get a better looking muffler / tail pipe for the 520D ? Anyone know what the correct dimensions would be ?

Thanks for any comments and help.