2014 e63 s, Is it normal or has anyone experienced more vibration at idle after having done any exhaust work? The resonator was removed a couple days ago and now when I’m sitting at idle I feel small vibration through steering wheel and chassis of the car. My cell phone holder now shakes and vibrates when it never did before. All other exhaust is stock, cats and mufflers.

 

Replaced with straight pipes, x, h? I guessing the pipes are touching something else which is causing your feedback. When my resonator was removed, the straight pipes were very close to each and sometimes touched which cause a rattle. I had a small bracket welded onto the pipes to keep them from touching.

 

Sounds like you replaced the resonator with straight pipes - Ive heard similar complaints when others did that, but it is rare when a crossover is used since they balance exhaust pulses. Did an H pipe crossover on mine when replacing the resonator (which itself has a H crossover tube as well) and didnt have any new vibrations.

 

I did - went from a straight pipe to adding an H pipe.

 

I have no resonator and no vibration at idle

 

I added an H pipe when I did my resonator delete and have had no issues.

 

Yes it is just straight pipes. Do you think it is because of the actual purses of the exhaust or because the pipes are now floating and not supported together like they originally were with the resonator? I may try adding a bracket to tie both pipes back together and see if that makes a difference. I looked at the entire exhaust and nothing is touching or loose.