just installed pacesetter headers on my 2000 ta and now i have a really bad vibration around 1500 rpm. what would cause this, and what would solve this problem.

 

if i do the poly motor mounts would it cause anymore vibration it the car or would it take care of the vibration.

 

What Y pipe are you running. It could be hitting the floorpan.

 

Yeah check out the pipe and see if its hitting anywhere. Also, the little brace thing that runs under the y pipe was causing alot of noise on mine so I just took it off. You might want to check that out.

 

the only time the y pipe bangs the floorboard is under hard acceleration. and for the tunnel brace yea i didnt even put that back on after installing the headers because the beace wouldnt even come close to bolting back up because the y pipe hung to low.

 

anyone?

 

just keep looking...cause I have a bad vibration around 1700rpms on the decel...and I just have to try to find out where it's hitting....

 

anyone else?

 

I am looking for the same problem on my 2002 Z28. Mine shutters on take off. I can feel the vibrations in the floor boards. I just put in Hookers with y-pipe. I think it might be the connections vibrating. I am going to take mine the the muffler shop this weekend and get flanges welded to the pipe!! Hopefully this takes care of that.