A new sound, what could it be ?

[RWP]

Well i was driving around today and i noticed a odd buzz coming from what seemed to be the exhaust pipe i would guess im not sure. It only happens at the 2400-2600 RPM range before and after that there is no sound at all its a quick Buzz almost like the buzz sound of powerlines. is it exhaust rattle ? i know its not electrical because A) you can feel a small vibration when it happens and B)The only electrical things back there are the Rear window defrost/wiper and the tail lights, i have the speakers removed so i know its not them.

Any ideas ?

[shrapnail]

are all the speakers removed? If not it could be ground feedback through the system. The location could be getting "thrown" to your ears.

Not saying it's likely just one possibility

Exhaust rattle seems likley enough

If the "vibration" is rough enough maybe fuel pump issue?

And last possible thought would be pumpkin.. limited slip or otherwise

Just tossing out some ideas

[RWP]

No its not speakers i have no Stereo/speakers at all i took it all out. asnd i never thought of the diff, that could be a possibility.

[180fan]

checked your heat shields lately?