Car is a 997.1 C2S:
I changed my exhaust mufflers and tips recently and noticed quite a bit of movement/vibration in the exhaust tips.

Is it normal for the exhaust to vibrate so much?

I also get a fair bit of vibration at idle when the car is at a complete stop and in gear (car is a tip). It feels like I'm sitting in a massage chair...? When I shift to Neutral the vibrating is gone... what gives??? Engine mounts possibly?

 

Loose tips or improperly installed. Are they after market or stock?

 

The tips are definitely not loose - they have been tightened are retightened. It seems the whole muffler/exhaust is vibrating.

These are aftermarket tips.

 

You had the mufflers replaced and now the exhaust system is vibrating......take it back and get it fixed, eh?

 

Spot weld?

 

At idle, these engine vibrate a good deal. It could be normal, or it could be one or more exhaust hangers aren't tightened/fastened correctly.

 

i've had to get additional clamps installed on my CG mufflers due to excessive vibration, even still they vibrate so much that the license plater holder on the rear of the car vibrates in concert

 

Thanks for the suggestions guys.

I've located the culprit causing the vibrating tip on one side. It was one bolt that was tight but not "totally" tight.