Have been interested in getting a Chip from
www.tdi-tuning.co.uk and recently came across an Aust. Co. in NSW that has Dealers/Distributors around the Country.
Try
www.dpchip.com Interesting reading when it comes to Guarantees, Product, Engine and Driveline Warranties.
Hope these are helpful.
I personally would probably consider an upgrade of my Intercooler and Fan before installing a Chip.