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Old 07-25-2011, 04:06 PM   #1
Bigmoney890
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09 Homemade Cold Air Intake

Finally got around to making a homemade CAI without any CEL or Wrench Lights. Works great and sounds awesome, and noticed an immediate power increase!

*EDIT* THANKS TO USER DUHAMEL FOR THE IDEA!!!!


Step 1:
I contacted my local junkyard and tried finding a 02-07 duratec MAF tube from one of the older foci. They didnt have any, but assured me that either a taurus MAF or Lincoln LS MAF would work, went down there and got the MAF and Tube from an 04 Lincoln LS for $5.

04 Lincoln LS, MAF and MAF Tube:


Step 2:
Cut the MAF Tube away from the top of the air filter lid


Step 3:
Sanded the edges of the cut MAF tube


Step 4:
Removed the MAF from the Focus and inserted it in the cut Lincoln tube


Step 5:
I Attached the Cold Air Intake





Before:


After:


and before you say anything, yes those are zip ties, and no they are not permanent. My local lowe's got destroyed in a tornando and i cant exactly run to town and get something better lol the new one opens in a few weeks and ill get something better to secure it with and post some redeemer pics up.

Overall it took about twenty mintues or so and was very easy. I let my car run for about fifteen minutes before i secured everything just to make sure i was in the clear, after the fifteen mintues i zip tied everything and rode down the road for about twenty miles and no lights whatsoever and like i mentioned, it sounded amazing and i notcied and immediate power gain, nothing huge, but i could definentily notice a difference. Gas mileage it undetermined so far

Lemme know what you guys think, and try to keep the zip tie heckling to a minimum


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Old 07-25-2011, 06:56 PM   #2
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Right on man. Nice job! Good info about the Taurus and Lincoln LS MAF tubes.
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Old 07-25-2011, 06:59 PM   #3
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yeah, and it came with the MAF sensor still in the tube haha i guess the guy at the junkyard didnt realize it, so if anyone needs one, lemme know
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Old 07-25-2011, 08:02 PM   #4
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Cool. Glad to see that you got something figured out
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Old 07-25-2011, 08:03 PM   #5
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haha yeah, it took long enough
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Old 07-26-2011, 04:49 AM   #6
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What is the Diameter of the housing you are using in comparison to the stock focus?
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Old 07-26-2011, 05:46 AM   #7
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I made one also, its kinda scary doing a mod like this with the only MAF housing you have. If you dont get it right you cant drive it for a while.

IMO as long as you use the stock MAF housing your golden.

I used a 2.5" tube off e-bay, 3"-2.5 coupler from the TB to the 2.5" tube. Cut the stock MAF housing down to its smaller section which connects to the 2.5" tube with just a 2.5-2.5" coupler. Then the spectra filter is 4" with a few spacer got it to fit on the other end of the MAF housing.
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Last edited by BowerR64; 07-31-2011 at 02:46 PM.
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Old 07-26-2011, 10:41 AM   #8
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Quote:
Originally Posted by blkb13 View Post
What is the Diameter of the housing you are using in comparison to the stock focus?
The tubes are exactly the same as a stock 2009 foci's - 3".

Here's the link to mine. Only difference is I hacked apart the existing tube, but it looks exactly the same as the one from the Lincoln LS that Bigmoney used.
http://www.focusfanatics.com/forum/showthread.php?t=263115
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Old 03-05-2013, 09:18 AM   #9
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Did you ever end up taking the zip ties off? Does anybody have experience in how to properly mount one of these things? I'm not trying to use zip ties if I don't have too...
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Old 03-05-2013, 10:56 PM   #10
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I don't "show" my car so zip ties worked just fine, and have held up for over a year. Don't know if this helps but zip ties will hold up. I do see the point though cause it would look better with a permanent mount.
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