1998 Mercury 150hp DFI 851 trigger error, Pulling the hair I have left out!

[DsOutboard]

I have an 851 Trigger error, Engine runs good but after 15-20 mins of running, engine seems to misfire. No ignition or injector faults.
Cold start, starts & stahls 3-4 times then runs and idles. Fuel & air pressure is in spec.
Multiple Codes:
132 Trig Signal
15 Map
120 TPI 1
125 TPI 2
168 TPI 1 Limit
169 TPI 2 Limit