ausgeflippt951

Hey y'all -- so, my air filter is right behind the headlight, as is the case with most MAF's. As is also often the case, it has a tendency to "gulp" some water when on boost in the rain. The water causes the MAF to go nuts and kills my tune...

I'm thinking of building a little shield to go around the filter and protect it. Anyone done this? Would appreciate thoughts on what works and what doesn't, since I'm too busy (or lazy) to bother spending a lot of time on this.

Motosport

Lindsey Racing has one on their site.. I have only seen pics of it, but it looks good and helps not only to keep water away from the filter, but also to keep hot engine bay air away from it, so it mostly sucks air from the hole in the fender where the snorkel use to be..

schip43

Maybe something like this?
http://www.autoanything.com/air-inta...A3167A0A0.aspx

Crackership

I live in western Washington state... and it rains here... I mean, it really rains here. I've got an M-Tune, right behind the headlight, in the normal spot... and I've never had a problem with it gulping up water.

I did have a cold air intake on a previous car, where the filter element was actually down in the front bumper, and that one would occasionally gulp water when I ran through puddles, but even then.. if I avoided puddles, it wouldn't have an issue.

I guess what I'm getting at is, maybe there's a larger issue that's allowing large amounts of water into your filter. Just a thought.

Tom M'Guinn

I don't have that problem. Do you have the little rubber weatherstripping pieces under the headlight bucket? I'd be worried about restricting air flow if you put a shield around and close to the filter. Maybe just a diverter shields well above the filter to prevent the run off from falling on the filter.....?

Thom

I use Injen's Hydroshield.
Works great, especially when you start the engine after power-washing the car - no more stumbling or odd running because of a wet MAF.

ausgeflippt951

Thanks guys! Thom, I'll give that Injen thing a whirl; they're cheap enough.

I don't actually see any problems with the car off-boost but when I get into boost the tune kicks the bucket. Basically, it means I can't do DEs in the rain (unless I want to toodle along off-boost).

I'll try it out and report back.

ausgeflippt951

Wanted to provide a quick update, for those of you searching:

I went ahead and bought the Injen pre-filter (Hydroshield) that Thom mentioned, and last weekend was able to take the car out in a thunderstorm. While it there wasn't much rain on the ground yet, I think it did its job! The rain was moderately heavy, and I'm fairly certain I would've seen a problem had I not had it installed.


My butt-dyno may have been slightly miscalculated, but throttle response/power may have been slightly compromised. But hell, in the rain, who cares?


I'll be keeping the Hydroshield off of the car for DE's, unless it rains. Fingers crossed.