Really late to this thread...have same symptoms as OP.
For Evo 9...would the setup be the same/similar ?
Manual shows aux 4/aux 12 (ethrottle) as fp speed relay for Evo 9 however this was 'off' when checking. Also fuel pump did not show the above settings...and changed.
Edit
I see in the manual for evo 9 that aux 12/aux 4 is for FP speed relay...however in stock ECU setting it is GP output
any help would be appreciated
Mike