These are available in Japan, and Middle East and making their way everywhere. Soon they will be in the USA as well, but we are in a dead spot with respect to HKS products. HKS USA is no more, and the two approved importers are still waiting on stocking orders and gearing up.
In the meantime, we are aquiring our HKS products directly from our contacts in Japan and elsewhere. It's a neat unit...I tuned this car with it (
BUILDS>> 1022HP R35 GT-R - Speedhunters ), and it's easily the best boost controller I've used. Much more on screen functionality and held 34psi of boost no problem.