I have a 2000 GT. Put an accufab plenum on and took it for a ride. Stood on it once, and about 3 seconds later the engine started making this nasty wrapping noise. I put the old plenum back on just to make sure it wasnt that. All of the hardware is accounted for, and I am positive nothing got dropped down the intake. The noise is coming from the middle of the engine, close to the firewall. It makes no noise untill it warms up a little bit, then is loudest between 2k and 2800k. The noise doesnt go away after that, but is considerably quieter. Somebody please help me! Thanks in advance.