OK fellas... I know this is an opinion thing, but I recently purchased an 04 MM and joined this site. My car has 2300 miles and I have a few questions. What exhaust modifications do you recommend and which custom tune do you recommend. I will be purchasing a cold air intake soon (JLT) and I am thinking about 4.10's... although it will see some long distance highway use. Your advice and opinions will be greatly appreciated. I hope I don't stir up too much controversy.