Hello, we have 2 almost identical skis, 06 RXT and 06 GTI from what I can tell biggest difference is the 06 rxt has an mpen. we have 1 ski runs perfect and one that fuel pump looses pressure after approx 5 minutes under load. we have no codes and temps are in great shape.
we have changed mpen, ecu and all sensors with no luck. we have also changed fuel pump from 1 ski to the other with no luck. we havent hot wired the fuel pump yet to see if it stays running.
I have a pretty new tech working on this ski and I am almost certain he has missed something. Anyone have any ideas or leads or diagnostic procedures out of the norm or see what we may be missing.

anyone experienced any issue as this? Thank you for your help in advance. God Bless