ISX15 CM2250 IMAP sensor erratic, intermittent or incorrect

[zyNoT]

UPDATE: It appears to be the wiring to the turbo speed sensor. Sensor itself looks good, wiring has a problem. Using graph included in pictures, I was able to diagnose by having someone else move the wires around, turbo speed would stay at 0 when wire was held in a certain spot and manifold pressure would be ignored by the ECM less than a minute later.