We all know Shewantsthezee had a problem and fingers were pointed as to why. They were actually just a guess. Without monitoring EMAP and EGT's per cylinder you won't know what the actual cause of the failure was. If you have a EMAP sensor at the turbo you will be able to calculate when the turbine wheel is done and pressure starts to back up. What you won't know is if the actual turbo manifolds or exhaust manifolds are causing the problem. By monitoring EGT's it will tell you when you have a restriction in the exhaust manifolds. The EMAP sensor may or may not catch this issue.