ok, I'm sorry if this is in the forum but idk where else to post it. I have a 1995 honda accord ex vtec and have been slowly building a 2.5 inch headerback. a while ago when I would acclerate hard or soft at about 3k and up there would be a metal on metal vibration sound. at first I thought it may have been the magnaflow I had on there so I swapped to my old fart can to no avail sound is still there, next I thought it may have been my stock exhaust manifold so I bought a header still makes the vibrating noise, then I thought it may have been my resonator because it has a whole bunch of s**t rattling around in it swapped it to a glasspack and guess what? the f***ing sound is still there, I dont have a cat-converter as it took a s**t a while ago. What could it be? my car used to sound good but now it sounds like *** because of this. the exhaust system isnt rattling on anything I already looked. I guess I should also add that the sound is coming from the exhaust itself, for lack of a better way to explain it the rattle sound comes out with the exhaust sound.

Ill try to post a vid on youtube when I get a chance but until then, any idea?

P.S. if any of this doesnt make sense tell me and Ill try to make it better.

 

heat shields

 

There are no heatshields I took em all off too see if that may have been it

 

I have the same problem. I have a 93 Prelude with the Vtec, and can't figure out where the hell the problem is. I took off all of the heat shields, and still does it...

 

yeah idk.. on my 95 ex I have had terrible rattling on my exhaust as well... the sound was normally right by the cad.. part of my heat shield actually broke off while i was driving and was dragging on the ground, so i had to pull over and rip it off.. still rattles but not as bad. if you already replaced as many parts are u did for your exhaust, but not the cad, i'd suggest getting a high flow cad of some sort, seeing if the problem is still there.