From idle I can hammer the throttle and around 2000 rpms and more it just sounds horrible. Really bad timing rattle. I've loaded sw5 sw7 and sw9 all with the same results. Running 3 tq managment, 1 rail, 1 timing. I have everything in my sig minus the juice. I've been using it for gauges. Took it off now just to make sure it wasnt adding timing. I put the ecm back to stock and put the juice back on for now. But I miss the power of the Smarty already.