Hey,
I was doing some work (installing pyrometer, block heater, and boost gauge...DIY links later!) and had to drive my car over to the wash rack at dad's shop. Well it happens that I didn't have any manifolds (intake or exhaust)
I plugged off the turbo oil pressure line and well....here is a video
The definition of no back pressure!

Just thought you guys might enjoy it heh.

Benz 'Opened Up' ~1.7Megs WMV