cpd

that can be heard at the back wheel on both sides when you walk around while its at idle. has done it 100% of the time for 18k since pump and filter change with no further failures or issues, never heard it before.
The sound is similar if not almost the same as the sound the pump was making on its way out but this sound is not as loud and more constant, and as you said cannot be heard in the car as the pump noise can be when its going. Ive lost the driver rear wheel liner a couple times and i saw that filter you are speaking about and my intuition would be that is not what is causing the sound.

MC Hammered

It must be since the car isn't going 'weeee' anymore

MC Hammered

The thing is I only hear it on the driver side. The passenger side is silent.

javanator

....most common to hear during high linear speed crusing and high-g turning.

oh wait....just read your entire post.

Ever had your fuel pump and fuel filter replaced? The symptoms you describe (pulsating, not all the time) sounds like some kind of "pump" related mechanics...like it is working too hard for some reason.

kpatz

So it isn't the fuel pump.

cpd

it must be something else. exhaust? what else is over there? shoot, maybe it is that little wheel well filter?

cpd

now im completely clueless...

Avant XP

As others have mentioned, could be fuel pump. There was a recall on it as well.