I

 

when i had my Civic Si, I had a CF hood with a vent, but the aerodynamics at speed really prevented water from entering unless i was sitting still...i dont think it would be a problem unless the water dumped straight over the alternator, i mean there are a lot of engines with hood scoops and they are factory so i dont see why a non-induction type vent would cause a problem. go for it.

Quick2K

 

I havent had any problems with mine in the rain yet. The only thing is i have a comptech intake and the top of the air box cover has a hole in it. So i wraped plastic over the top of the intake so water couldnt get in the air box.

 

No problems at all even in heavy rain with this hood

 

Not to mention that carbon fiber hoods look great.

 

I don't think it'd be too much of a problem. Now I appreciate my Top Secret Hood more though, it has carbon-fiber rain catches. Keeps rain from gettin in there and it's cool cuz it's CF.

 

water falls right on my stock intake box w/ my amuse style hood, but if i ever get a CAI im afraid i will make the engine bay really wet by rain or washing...without the stock intake box water will fall right onto the pullies,belts.. is that ok?