I looked for my original thread on this topic but couldn't find it.

Anyway, we finally got some serious rain here in the Pac NW and I was able to check to see if water would be sucked into the intake system. It was extremely wet here yesterday, so out on the I-5 I went. Lots of water on the roadway and I stayed behind an 18 wheeler for about 3-4 miles, right in his rooster tail. I got off the freeway immediately at a rest area and check for water.

There was no water in or around the filter. The underside of the BMP filter was dry. Also the area around the cutout was dry as well. I am guessing this must be a high pressure area which keeps the water from coming in.

So I know a few people had concerns about this maybe being a problem. It appears it's a non issue.

John :smile:

 

Ghillie,
Thanks for the update. A while ago I was looking for your original thread as you had mentioned that you were going to do some testing than post...That thread must have gone where all those socks go from the dryer.

I remember the PacNW too well...If it stays dry there, it will be dry anywhere. God how I don't miss that.

How much of a difference did you notice after this mod? Is the supercharger whine that much more noticiable? Did you have to take the whole box out? I have looked at Randy's "how to" and I would think that if one placed some sheet metal behind the box, as to protect the brake lines, that the "mod" could be done with the airbox in place with the right tool. Thoughts? Anyone?

Was there ever a post that actually listed some dyno #s before the airbox mod and after?

By the way, awesome color choice on your "S"


His, Chile Red all over / Hers, EB UJ on top

 

Yup, the Pac NW's weather sucks.

I don't have access to a dyno or a G-tech at the time so it is by the seat of the pants only. And with that said, I did't feel any change. But the Supercharger whine is way cool!

I put sheet metal between the brake lines and the wall for my mod as well. It worked just fine and went very quick.

As far as the color, great minds think alike I guess.

John

 

>>
>>How much of a difference did you notice after this mod? Is the supercharger whine that much more noticiable? Did you have to take the whole box out? I have looked at Randy's "how to" and I would think that if one placed some sheet metal behind the box, as to protect the brake lines, that the "mod" could be done with the airbox in place with the right tool. Thoughts? Anyone?
>

I did my airbox mod two nights ago and used my Dremel rotary saw which has an attachment that let's you adjust the drill bit to the exact length you need. This way, I knew the bit wasn't long enough to reach all the way to the brake lines - just through the airbox. I took all of maybe two minutes!

 

Thanks,
What type of cutting tool did you use and how thick was the sheet metal...I just don't want to screw up and cut a brake line that would really s**k.

 

>>Thanks,
>>What type of cutting tool did you use and how thick was the sheet metal...I just don't want to screw up and cut a brake line that would really s**k.
>>
>>


1/16" sheetmetal, and I used a dremel on slow speed.....took just a few minutes and looks good.

I'm gonna seal the gap between the wall and the BMP housing next. Then it will be totally isolated from hot air from the engine. Don't expect any gains by doing this but it should look cool and make me feel better.

John

 

TwOMINIs,

It's one of those things that you couldn't dyno effectively unless you had a dyno in a wind tunnel (and I think only a couple of the F1 teams have access to a set-up like that).

I told you guys - even when you spray the hose right into the intake, it's really tough to get any moisture into that area. Thanks for the confirmation John.

The dremmel idea works great, but I didn't want anyone to accidentally cut through any of the brake lines back there, so the conservative method is in the how-to. It's more fun taking it all apart anyway !

Porsche did this set-up on the Cup cars back in the 90's, and there was a difference in power. What I'm working on now is getting a slight lip on the cowl vent to force more air into the opening. There are other ideas in the mill as well.

Let me know if you have any other questions on this mod - it's pretty straight forward, has a great sound, and looks cool too. I wish I could verify any performance gain, but like I said, I don't have the facilities (yet - hopefully someday!).

Randy

_________________

Click It!

 

 

Randy is this how to for just the BMP intake?? And where is the How to section?? I only see the Rspeed how to listed.

 

Nobull - you really don't see the how-to section??? It's stapled to the top of the performance mods forum. Open it and it takes you to a wonderful world of modifications!

You can do the mod with any of the replacement intakes - it won't do anything for the stock airbox, as it is sealed.

Randy

 

Sorry to rehash old threads, but I was just wondering if there had been any updates to this topic: Does anyone with and aftermarket intake and/or the "Swiss Cheese" airbox mod have any water in the engine experiences yet?

I just ordered the Birthday Pilo Intake Special, and I want to be prepared when it comes in...

Pilo CAI + Swiss Cheese = Quality?

Thanks!

 

Read the first post in this thread !! ops:

 

Um...yeah...thanks for the pro tip there. Believe it or not I had read this entire thread before I posted. That first post was a single incident on a single car with a single intake...I was just checking to see if, with the proliferation of CAIs and Randy's mod if there had been any other work done on this issue...

 

Has anyone tried this with the Cooper? I know there are a few battery kits to move it to the trunk and in theory I should be able to get a bit more positive pressure at the filter cone but has anyone tried it yet?