Oh about that Caddy CTS-V we did all the piping for. The other shop took it back and 2 months later after all the fine tuning dyno'd it. with the 13lb springs in the wastegates it had 456WHP and 493Wttqe and 3200 rpms. Dropped them both down to 4 lb springs and at 6500 rpms it had the same #'s. Could you imaging that thing on 13 lbs each and at 6500 rpms.