Fuel Pump Whine is Back (2022 w fixes)

[Ericlang1981]

My 23 boost started whining for the first time last weekend on and off intermittently. Ambient temps were really warm in alpine all weekend. I’m thinking it’s the exchanger heat soaking the pump and causing the issue

Yes 100%. My 22 would do the same thing. Bought some cheap heat shielding and put on the bottom of the tank. Definitely helped the whine out. Had also changed the stupid sock filter first and that helped for a bit. Not sure what the real fix is…