The only serious issue would be possible rusting and subsequent holes due to said rusting.

 

Hey guys, I have a similar problem with rain...
The faster I drive, the harder it rains. I'm serious. It's like I control the rain cloud with my gas pedal. I have to click my wipers to a faster speed the faster I go.

It's crazy. Seems to happen in my other car, too, so maybe there's something defective with both of them. Do I need a new windshield? I hope its not the engine going bad.

 

I filled my muffler/exhaust with water on a couple of occasions to steam clean my exhaust. It got louder

Holy four year old thread Batman!

 

Steam cleaning? Who cares? I control the weather with my accelerator. What about my problem?

 

You get bigger problems!

Hope I dont get banned for this but.

He hates you!

 

multiple reasons, the most significant one (in my opinion at least) would have to be..;
rain droplets- as the sound waves travel away from the source, rain droplets in the air refract some of the waves back away resulting in hearing something better than when its not raining as more of the sound wave is being reflected back towards you. the heavier the downpour, the more droplets, the more sound you will hear. (this concept can be observed when comparing a noise in a open field and then again at the same volume in a enclosed environment like a bedroom or inside your car. the waves will hit the walls and come back creating the illusion of it being louder)

hope that makes sense and helps
edit: nevermind, saw a super thread revival.. lol

 

inorite?

Nerd.

 

8 maniac I feel your pain trying to explain this to people. What I think it is, is that when you hit a deep enough puddle for the water to reach the exhaust manifold it cools the thinner exhaust pipe but not the thicker metal of the manifold, causing a small leak where they are connected. Then, after the pipe heats back up and expands, it seals the leak and the sound goes back to normal.

 

This seems to make sense to me. My RX-8 has the stock catback with a BHR catless midpipe, so it's normally pretty quiet below 5k rpms. With hurricane Michael dumping loads of rain today, the amount of water on the roads was considerable. My exhaust note got really loud, louder than I've heard it before. I thought I was imagining it the first time because it was subtle, but after driving in the rain multiple different times, it's a very clear difference. And it seems like the more water on the road (or how hard its raining), the louder the exhaust note is. I thought perhaps it might have been the water on the pipes changing the resonating frequencies, since the note sounded deeper, in addition to louder. But with my experience today, it really sounded like the exhaust outlet point had changed and moved closer to the drivers seat, like I had an exhaust leak.

I wonder if I let the car come up to temperature on a dry day, and then hit the exhaust pipes with a hose, if I can replicate the effects. Maybe this weekend if the rain lets up, I'll try it out.