Author Topic: Colorado Airbox Mod?  (Read 1622 times)

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aowhaus

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Colorado Airbox Mod?
« on: March 30, 2005, 02:17:13 PM »
I remember hearing about this a while ago and would like to do this mod, as I will be getting a FK grille (identical to the Kamei sports grille) and the painted grille frame will block the current air intake inlet.

I can't seem to find anything about this when I did a forum search.
Any links/help/suggestions here?
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jayryan

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Colorado Airbox Mod?
« Reply #1 on: March 30, 2005, 02:26:40 PM »
Cut a hole in the airbox and run a 2 1/2 or 3" hose to an open space for air. Mine's down in my lower air dam.
Also cut your MAF snorkel. But, I didn't do that part. I'm sure Chas or someone'll pipe in on that.
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Colorado Airbox Mod?
« Reply #1 on: March 30, 2005, 02:26:40 PM »

ianacole

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Colorado Airbox Mod?
« Reply #2 on: March 31, 2005, 01:17:42 PM »
I did this, with smoothing the inside of the airbox at the same time.  I left the MAF snorkle/trumpet as I saw a lot of talk about needing to equalize airflow across the diameter of the MAF.  If you remove the trumpet, as with many of the CAI designs, the airflow through the MAF is too turbulent and the MAF cannot accurately read the amout of airflow.

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huevon

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Colorado Airbox Mod?
« Reply #3 on: March 31, 2005, 02:55:35 PM »
Are you talking about the ram air that you can do a diy like the one on the right side of my battery.?

tweakeDub

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Colorado Airbox Mod?
« Reply #4 on: April 05, 2005, 10:19:51 PM »
No they are talking about a passat in which the airbox is on the other side. That info is pointless but might help avoid confussing you. they are talking about the actual lower half of your airbox recieving a hole in it

Chas

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Colorado Airbox Mod?
« Reply #5 on: April 11, 2005, 06:12:09 PM »
Alan, you have a B5.5 and thus you don't need to shorten the snorkle pipe like the AEB engined cars do. The factory figured that one out on the later cars. That was one of the main reasons Boris and myself came up with the idea of taking about 3/4 of an inch out of the length of the bell shaped snorkle. The bell shape end is then glued back in place to help smooth the air flow as was suggested above. But if you do want to get more air into the factory airbox, then do the added inlet ports. I like using the 2" piping because it is easier to route through the mess on the right front corner of the B5 and probably the B5.5 as well. 3" tubing is way to big to push through the confined space.

here's a couple of pictures of what I did.







I glued the aluminum part into the airbox and it has worked perfectly. It also seals out any leaks from the hot engine bay air and the hose won't slip off either.

Good luck!
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jayryan

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Colorado Airbox Mod?
« Reply #6 on: April 11, 2005, 07:05:47 PM »
Yup...Chas actually fabbed me the aluminum piece...thanks Chas!
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