I asked this question over on the engine board but had no responses so I thought maybe it shouldbe asked here instead.

In a recent message about the piston slap problem, R. Bess asked ...

"Are you referring to the piston slap problem? or to the slight exaust flutter you hear on acceleration?"

Since I have the exhaust flutter symptom, is this a known problem or is it just normal for the 5.4? Is there a known fix? I have a '97 F250 without any modifications.

Thanks