Air filter box

Asked by Mar 12, 2009 at 12:33 PM about the 2007 Ford Focus ZX4 ST

Question type: Car Customization

I have heard that if i drill a hole in my air filter box instead of buying a cold air intake, it would work the same and at the same time be less costly. Is it true that i can do this? If so, how big of a hole do i need to drill? Or give me any other info about this?

5 Answers

185

i wouldnt. i personaly think you might get more noise out of it, but thats about it. most of the benifit of the cold air intake is the fact that the air is cold. maybe if you drilled after the filter it would breath better but your taking in dirty ass air now. i have an aem cold air for my focus and i love it.

1 of 1 people found this helpful.
1,295

most "cold air intakes" in fact feet hot underhood air to the engine, and MIGHT increase 5 hp at the most on a car that has a really restricted intake

15

your 2007 focus comes with a lifetime air box that is dealer service only, they replace the hole thing, just add a cold air intake and that the air filter is in the fender, dont drill holes youll make something wrong happend!

1 of 1 people found this helpful.
35

I know this is a little late but; I recently, accidentally crushed my air cleaner box on my '05 focus after the ball joint failed and sent me into a ditch. I have access to parts at dealer prices because I work in the auto tuning field. Best price I have found is $200 for the box and 6 of the components. Further research shows this unit as a whole is MSRP @ $470... DON'T alter your air cleaner box!! Take it off and sell the P.O.S. ! Performance cold air intakes are way cheaper than an OEM, so you could pay or your cold air with the money you make. The body damage, suspension, CV and air cleaner box TOTALLED my car!! And it's really all due to this "Lifetime Air Filter" My opinion is that it's a total joke. Note: You can fab a pipe to lengthen your intake point. Custom make it to go down to your fender and make a hole in the fender. Thin expaded metal with metal screen behind it will serve as a pre-filter. If you are really crafty you can design this to avoid water kick up, even build a cone chamber to help force the air into the filter. It works, and you'll get more than a 6hp gain.

NO is not the same,you will need the cold air induction on it.

Your Answer

Focus

Looking for a Used Focus in your area?

CarGurus has 54,377 nationwide Focus listings starting at $1,495.

ZIP:

Ford Focus Experts

  • #1
    Tom Demyan
    Reputation
    1,390
  • #2
    dandyoun
    Reputation
    1,180
  • #3
    Su'ad Barakat
    Reputation
    940
View All

Related Models For Sale

Used Ford Fusion
1,092 Great Deals out of 76,946 listings starting at $895
Used Honda Civic
844 Great Deals out of 78,708 listings starting at $888
Used Ford Fiesta
155 Great Deals out of 18,246 listings starting at $1,995
Used Toyota Corolla
928 Great Deals out of 66,546 listings starting at $1,000
Used Ford Mustang
764 Great Deals out of 42,666 listings starting at $1,300
Used Mazda MAZDA3
353 Great Deals out of 27,157 listings starting at $950
Used Honda Accord
1,041 Great Deals out of 63,025 listings starting at $999
Used Hyundai Elantra
526 Great Deals out of 42,314 listings starting at $795
Used Toyota Camry
1,101 Great Deals out of 72,559 listings starting at $1,000
Used Ford Escape
1,139 Great Deals out of 85,568 listings starting at $999
Used Chevrolet Malibu
1,259 Great Deals out of 77,877 listings starting at $1,500
Used Nissan Altima
1,121 Great Deals out of 74,981 listings starting at $999
Used Volkswagen Jetta
565 Great Deals out of 42,013 listings starting at $1,000

Used Cars For Sale

2017 Ford Focus For Sale
5 Great Deals out of 24,046 listings starting at $9,130
2016 Ford Focus For Sale
192 Great Deals out of 7,365 listings starting at $7,999
2015 Ford Focus For Sale
83 Great Deals out of 4,042 listings starting at $6,799
2014 Ford Focus For Sale
229 Great Deals out of 7,119 listings starting at $4,995
2013 Ford Focus For Sale
86 Great Deals out of 2,917 listings starting at $4,595

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.