steve_earwig wrote:Sorry but I wouldn't recommend that mod for anywhere where there's a significant amount of rainfall.
I'm actually hoping for someone to nick the air intake from a 407/C5II as discussed over on the Coupe Club:
Try drowning that!!
Have you seen how much spray you actually get into the front of the car on a wet road let alone in the rain? Try driving with you windscreen wipers off while following someone on a wet road.
My S16 had a front mounted intake like your photo and where the the pipe pointed onto the filter it was forever gunked up with crap from following people and road grim kicked up by cars/trucks when it rained.
we ran an open bottom to the airbox and over 70,000km a lot on gravel roads i never once had a problem with the filter getting water logged or excessively dirty. This did make a difference to the mid-range power, and much improved throttle responce to the car.
The 306 was constantly looking like this:
(we had to knock the dirt out from between the inner plastic wheel arch and the metal wheel arch as it was rubbing against the wheel)
I know it's not ideal and it was just something to play around with, the thought behind the way we have cut the opening is the NACA duct. If you really want to look at improving the airflow you will need to swap out the piping from the bottom of the airbox as it narrows and twists, ideally then into a vortex section of pipe, into a water trap, then ducted through a semi-smooth walled (reduce boundary layer) constant diameter pipe
You can see the 307 intake mounted onto the bumper bar, this leads down to a connecting pipe in roughly the same area as the 406's in my photo above, i'll be looking later to see if something like this is possible.
The intake piping is actually material pipe from the scoop to the pipe connecting it to the airbox.
You guys make it sound like you drive through flooded roads all day, i should be glad then that where i live it's not constantly covered in foot of water...
