I am running the base kit with 5psi and have nothing but good things to say about this set-up. You can't beat the clean look under the hood!!
I have one of the very early units (s/n 0007) as it was pre-ordered back in Dec. and installed in Feb. The car is running great with ~1.5K miles logged since the install and it is running great with no problems!

 

Doogie, when are you slapping that Foose hood on there? I want to see it.

 

Wonder what comes first....me getting a supercharger or Doogie getting that hood put on.

 

Yeah, I know... the hood is still sitting in garage without paint. Had a crazy summer thus far and it just has not been a priority. Guess we could start pool and see which is done first. But my task is a bit cheaper than yours