2.5 was all the car had.. it felt like i was dragging a block behind me...my gsx had a 60 of 1.7, corvette did a 2.22 and the mx6 pulled 2.31 thru the 60s(all on street radials)...so i do know how to drive the problem is the car isnt going..pulled the plastic cover for the vavle cover and low and behold 2 bolts on the valve cover had completely come out , and the rest were loose enough that i could undo them by had...the exhaust manifold was missing a passenger side bolt and three others were loose to the point once again i could remove them by hand....car runs noticeably better but its pulling timing past 7psi, logged it today...rechecked everything no vacuum leaks, no boost leaks(used a boost leak detector @21psi)...so im completely lost...even let 2 of my corvette pals drive it and they said the same thing...feels like timing is giving out...the logs are horrible, at 4600 and 7psi timing just drops.....so lets kill the driver error discussion b/c thats not the problem, i need suggestions on what is causing the timing to be pulled so bad...oh and whoever said that low 15s was good for my mods...incorrect, i should be easily in the low 14s...any rate back to chekcing vacuum lines...