G'day all, I'm not sure if this topic has been covered but can't come up with anything from a search.

I have a new 2010 RRS 5.0 litre supercharged and love it though a bit more punch wouldn't go a stray.
I am wondering if anyone knows of anybody out there doing a performance chip / upgrade and if so has anybody got one and what they think of it.

If anybody in Australia knows of any here, that would be good too!