Anyone interested. I am at 5 psi and it sound horrible for low boost application. It's more like woommmmpppptttt...THis is for those running 8 psi and more boost.Used for barely 1 wk.-------jezreelhrc stage 1, sfmu, ml, prokits, egt, boost gauge, apexi tt, haydans tranny cooler, costum dp, dynotune fp gauge. gst muff, turbo spoilernothing like driving with the windows down and the music low: i love hearing the turbo spool, swwwhhhttt!!!!thanks for www.kaptainmyke.com for the sig hosting