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Old 04-28-2011, 01:35 PM   #11
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Its not going to hurt performance. The cover was plastic. That plastic would be the same temperature as everything else in that area of the engine. The snorkel will continue "pulling" in air as it was before but now you have opened up more surface area to pull the air from.
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Old 04-28-2011, 01:42 PM   #12
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updated with more pictures of the entire intake box removed
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Old 04-28-2011, 02:49 PM   #13
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Quote:
Originally Posted by REDFOCZ View Post
Couldnt fine a filter the fit on the maf, the maf has like a 2.5 inlet and all the filters in the ricer isle at autozone was 3 inch..


I put every thing back together for the mean time though
you can get a K&N filter in just about any size imaginable. go to their website to find a part number.
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Old 04-28-2011, 03:27 PM   #14
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Quote:
Originally Posted by BLRich1 View Post
Its not going to hurt performance. The cover was plastic. That plastic would be the same temperature as everything else in that area of the engine. The snorkel will continue "pulling" in air as it was before but now you have opened up more surface area to pull the air from.
Even plastic is an insulator. And because this pulls air in from outside normally, it could make a difference. When I removed the resonator from my airbox I put a hose in its place to pull in cooler air from behind the headlight.
As was said before, knowing the intake temps would help. I'm sure someone with a 2012 has a way of getting a reading.

Either way, if you didn't notice a difference in performance, it couldn't hurt to try for a while, and it looks good. Good find!
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Old 04-28-2011, 06:55 PM   #15
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http://www.sbfilters.com/Store/Universal-Filters

Take a couple measurements and order what you need to fit the MAF. I used these on a 450 horsepower Tbird and a couple other cars a whileback. They work great and look cool too.
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Old 04-28-2011, 08:41 PM   #16
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There are millions of pictures available of the overall stuff but anything interesting you find under the hood could be useful.

I notice they went to the older-GM-style MAF sensor according to your picture..
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Old 07-05-2011, 06:28 AM   #17
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With aftermarket cold air intakes normally the filter is 100% exposed so that means you are sucking in 100% engine heat. So does this mean those are not going to help if anyone comes out with one? I was thinking about cutting a 4x4 square out of my air box on top, basically like my volant air intake I had on my 03 focus.
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Old 07-05-2011, 08:36 AM   #18
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Quote:
Originally Posted by vmaxbaby View Post
With aftermarket cold air intakes normally the filter is 100% exposed so that means you are sucking in 100% engine heat. So does this mean those are not going to help if anyone comes out with one? I was thinking about cutting a 4x4 square out of my air box on top, basically like my volant air intake I had on my 03 focus.

Definitley correct, I'm an engineer with aerodynamics experience... I'm working on an air box right now. Hope to have something designed by the end of the week once I get a chance to get a good look under the hood.
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Old 07-05-2011, 09:24 AM   #19
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I would be very carefull any changes before that MAF and you will change the fueling and timing

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Old 07-05-2011, 09:44 AM   #20
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Will the computer learn the air ratio? With my 03 focus I did airbox and cat back the same time. When I started it for the first time the car idled at 3K rpm..I was thinking shit I screwed somwthing up. Then after about a minute the idle started dropping down and down until it was at normal idle. Waiting a minute turned off the car started it backup and went right to the correct idle. Did not retune and drove it 7 years that way until I sold it to buy the 2012. Was hoping it would work the same?
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