They put out some serious HP and are probably the fastest cars I have ever seen. There is also no turbo lag, and it does not take longer to spool up. Very good concept. THere is a Camaro SS with the setup from here that has an intercooler and he can boost well into 30PSI with no problem and posts over 1000HP! I get to see it run in a couple weeks. :) Anyways, very good company, probably not worth putting on a Z, but it would work well! Powers