I have a 2001 Camaro SS M6 with a TTI T76 kit. Stock motor from intake to pan. Dynod at 8 psi today car only made 380 hp 470tq. A/F was mid 11's timing was around 14 degrees. (0 knock) Made peak hp around 4000-4500 then dropped straight off from there. Almost seems like a misfire. It counted very few misfires with the scan tool. A cuple cylinders would mis once in a while. I think 2 and 4. SES light hasn't been on. Car also has a slight vibration at idle, and gets a little worse when you rev it in neutral on the decel. Can't really tell to much when its in gear. Any help would be most appreciated.