[ www.300zxclub.com, ] I emailed him a month ago too asking a few question with no response. I recall him writing that he was focusing his time and money into property investment instead of further product development. He was working on a different route intercooler piping and a V3 exhaust manifold (tubular style, but still cast form...). Interesting ideas but I haven't heard anything in some time. I agree with twinturbineZ, try getting ahold of Ztuner.