E53 X5 4.6is 2003 to twin turbo charge it or supercharge?

[bcredliner]

There is no build thread.

As mentioned, I had the original install done by a shop experienced modifying BMWs and nitrous installs. Since it was breaking new ground I wanted to be sure all safety factors were as they should be and I was maximizing gains. It was a good decision based on the involved testing the shop did get to the 150 shot. I was there most of the time so I am now comfortable doing upgrades or repairs even an install from scratch. There are a couple of pictures in my album of the initial configuration but none that are current.