CarHopper

So I got stuck today for 5 minutes in the rain. No big deal, car gets washed anyways... However, as I'm driving along it starts to sound like I'm running open headers, like wtf? No joke, it just sounds like an open dump exhaust right beneath my seat. No cels, lights, nothing. I ease it home and it quiets right down like nothing ever happened.

Thoughts? Extremely weird...

ENV²

Did you look around to see if any muscle cars, straight pipes exotics, etc were around you? Once in my S4 I all of a sudden began feeling the same thing in traffic, though my exhaust fell off. Realized that 2 cars to the right of me was a straight piped Murcielago shaking the pavement.

CarHopper

Nope, just me. And it was exactly like that. I had the radio up and everything and I just noticed the car getting loud. So, I turned down the radio and took a listen. Then it sounded like I opened effing cutouts below me.

ENV²

Maybe check all exhaust gaskets?

CarHopper

I'll definitely keep an eye on this.

Honestly though, made me really want long tubes haha!

AMG893

If you do get LTH, just make sure they are US made! NOT CHINA!

CarHopper

^^ Haha you leave those shenanigans in that other thread!

AMG893

LOL - yes my thread has had alot of views, not much replies from others! lol

berto

same here....like its got a temp sensor thats not happy....seems to go away once it dries out.

E55Greasemonkey

Both of my AMG's are louder in the rain. I think it has something to do with the smooth wet pavement reflecting sound better than dry, rough pavement.

Mully78

mine does something similar in the rain. If I hit a puddle or it’s just raining heavily it will start to drone really loudly from the passenger side. Have never been able to diagnose it, but my theory is the cold water hitting the exhaust causes it to contract a bit and the exhaust is making contact with something under the car.

Henry_jenks_

Seems like the same thing happened in my ‘13 C250 today drove over a puddle and the exhaust sounded Very loud and the Turbo became very audible and then 30 seconds to a minute later it stops. Has anyone else had that sort of issue