One of the best things about living in California (besides the weather of course) is the manufactures that have their business's near us.
A couple weeks ago I was able to take my baby to BBK Performance in Temecula and they used her for some R & D.
Here is the link to their webiste that talks about their R & D
While Blu2 was there they added 1-3/4" Shorty Tuned Length Headers and a cold air intake.
I think I got a good increase overall.
Increase by 12hp and 14 ft lb of tq