It's normal.

 

Good to know thanks. I'm quite happy with the car now but down the track if I get a bit bored and wanted to up the boost to 8psi (right now it's 6psi) would it be a reasonably safe jump or will the car die a horrible death?

 

Depends on your injectors and a good tune but 8 PSI should be fine.

 

Ask whoever tuned it.