Under Car noise

[270R]

My car makes a rattally noise when I reach A certain RPM, and it comes from under the car. Does anybody know what it could be?

[Flybert]

That would be an exhaust shield rattle.

[hookedup240]

do you hear it at about 2800-3k under hard accel. I have the same thing, i think its just the loose exhaust shield as flybert said

[Vatche]

well the heat sheild of the CATALYTIC convertor can be loose, my problem is that the exhaust manifold heat sheild vibrates at high RPMs and its all tight...i have to weld a newb bracket for it....