Seems to have more low-end torque from 2000-2800 RPM. Suspect the larger 65mm turbine is allowing her to breathe a bit better. Power feels pretty linear all the way to 6500 RPM..pulls like a raped ape. However if you bog her down under high loads and higher gears..the compressor will surge.

Install Pics here:
<a href="http://www.worldsbeer.com/urs4/turbo">Here</a>