sorry. i have lex/550's, bic ddp, full 3" exh, k&n filter, hard i/c pipes. i dyno'd it at 16psi, but it falls off to 13 or so after 5k rpm. my max hp was at 5500. i've run it at 17psi on the street, but it feels like the ignition system might be the next weak link. other than that, it pulls hard right to 6k rpm.