[Fuukk_Mercedes]

Well the guys at Carrozzeria Design fixed the exhaust issues...it was originally a clamp on system which they welded instead, and they did a number of other things as well, anyways no more problems but thnx for your guys input

[Jonmartin]

That sucks about your exhaust...but off topic your car sorta looks familiar were u the guy that caught me on the 405S around santa monica in my SG coupe and said nice wheels? the weekend of the LA Vishnu tune I believe it was a friday.You took off right after but sorta remember the car I didn't get a chance to say it back lol..

[Fuukk_Mercedes]

No that wasnt me man, i just got my car the other day and my iForged are still 2 weeks from being finished.....yea i think im gonna take my car to Carrozzeria Design performance shop and tell them the issues and have the fix it

[all8up]

Well I am fresh off two exhaust installs over the past weekend and figured I'd try to diagnose your problems.

My guess on the rattle at idle is most likely one of the hangers not being secured correctly and I am going to guess it is one of the hangers that have a bolt attached to the one of the rubber hangers.

The excessive noise you are referring to could be an exhaust leak. There are a ton of clamps with the new exhaust system and someone might not have connected the pipes completely before securing the clamps.

In short, take it back to whoever installed it and have them look for these problems...if you did it yourself, you probably know what I am referring to.
Good luck

[E36325is]

Similar noises and clatter happened to my Boxster when I installed the Gemballa exhaust, brought it back to the shop and it was an installation glitch. So I think it should only be a small problem.

Since aftermarket exhausts are made with thinner stainless materials plus the extra diameter would make them more prone to drone under load.