http://www.globalautomotive.com.au/
These guys are great! email him and he will send dyno charts and give you honest advice...
I have been meaning to get one for ages but I still cant justify the $450 when I can buy an electronic boost controller for that...
I have heard of pressing the standard fuel pressure regulator in with a screw driver which increase the pressure but if you do it to much you will screw up your injectors