Mine does a lot of whining. My wife still gets worried sometimes because she can't figure out what it is or she forgets that it whines after everytime I tell her.

 

Lol, sounds like my wife!

 

and I can't tell if it's my wife or the fuel pump that's whining.

 

 

mine does the same thing, only notice every so often and im like WTF? oh yeah, fuel pump. get a lot of questions "whats that noise?"... "what noise, oh yeah, THAT noise, thats my fuel pump"
"wow does ur car really need that much fuel?"... "sometimes"
see if u can ride is someone else's car that has one and compare. if its similar, ur fine, if its WAY louder, or off pitch, u may have an issue. ive run the walbro's in many a DSM and now my EVO and have yet to have a problem with one.

 

Dual in-tank 255's on my Cobra. It's damn loud when the car isn't running. Plus I can still hear them over my full Bassani exhaust and Vortech T-trim when the car is running, and they are in the tank under the trunk, completely isolated from the inside of the car.

 

I too actually enjoy the sound of the whine along with the sound of the engine, i think it sounds friggin awesome, but my walbro is completely silent =[ i never hear it at all =[

 

New install here, and wow, that was easy! Mine didn't whine for about 300 miles, and then when I got off of the freeway today, and pulled in my drive, bamo, whino. So it sounds like it might goaway depeding on how hard you drive your car? I should say depending on how hard the pump actually works?

 

I have learned that Walbros work on either the "High" or "Low" loop.
Basically when the ambient temp and ECU demands higher pressure you get the "High" mode whine.