my question is how to stop the inside of my car from rattling a hell of alot while im driving between 2.5k and 4k rpm'? its defenitly from my exhaust cuz it never did it before, and my exhaust makes alot of vibrations between 2 and 4k. There is a highpitched rattling sound coming from my center console like cupholder area and from the back of the roof. behind the sunroof. Ive checked all screws etc to make sure they are tight...which they are.

Would adding in a resonator change the tone enough to make the vibrations stop?!? or should i get that sound deadening stuff sprayed underneath my car?!?

thanks for your input...

(car is a 1998 EX with tanabe super racing medallion)

thanks.

 

Try a flex pipe. Have a muffler shop add it inline with your cat, or before the exhaust. That will let it move around and give an area for the vibrations from the motor to die off.