Looking for tips: Modifing a 4.8is

[TurboQueef]

Good day,

I am new to the BMW forums... my current project is a 2005 Subaru STi which I have modified significantly. I am close to my goal with this vehicle (550 AWHP, 10 second 1/4 mile pass and 30MPG + capable) and am considering moving to an X5. My specific interest is the 4.8is

I joined the forum to collect information about the 4.8is... I want to learn about the performance modifications that are commonly used and the performance gains that can be reliably achieved using them.

Please let me know if you can help me learn about the modification potential for this vehicle.

Thanks,

Jeff B
LINK to my webpage