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homemade cold air intake??

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Old 02-09-2009, 07:33 PM
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Default homemade cold air intake??

i am too cheap to buy one and i am also a engineering student. i also like to make stuff. so does anyone have any pixs?? and have you noticed any gain from it???

i was thinking a cone filter and 3 inch exhaust pipe.
Old 02-09-2009, 08:26 PM
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I made one out of two 4" spacers from the auto parts store, a cone filter, a little beather, a peice of steel bent to suport it, and a home depot piece of sheat metal as a heat shield. HIgh school budget gotta love it.

here are the pics

The first stage
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All done

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I got better throttle response, a little more low end power, and it makes a cool little squeak at 2000RPMS

If you have any questions i will be more than happy to help
Old 02-09-2009, 08:57 PM
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cool thanks that is what i was looking for.......

come on no one else????

cant wait to start mine
Old 02-09-2009, 09:12 PM
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i have one and its got the 9 in cone filter, ive also made heat shield and done test it does keep colder air coming in when moving but at idle and stopped its scking in hotter air i dont have any pics right now
Old 02-10-2009, 05:31 PM
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if your using just a 3 inch pipe off the stock flex hose you may want to get more pipe my first pic is w/ a single 4 inch pipe. I ran that for a few days but then i realized i could add another pipe to push the filter out more thus getting colder air. i'd try to get it out as far as you can
Old 02-10-2009, 05:54 PM
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Hmmm good idea's i might have to do that this weekend......

And do you have to have a peice of metal to hold it up or could you just let it sit there i just dont see anything tha could hurt it if it layed there......
Old 02-10-2009, 06:00 PM
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Originally Posted by XJ?2010
I made one out of two 4" spacers from the auto parts store, a cone filter, a little beather, a peice of steel bent to suport it, and a home depot piece of sheat metal as a heat shield. HIgh school budget gotta love it.

here are the pics

The first stage




All done






I got better throttle response, a little more low end power, and it makes a cool little squeak at 2000RPMS

If you have any questions i will be more than happy to help
where did you get your filter at? i went to auto zone today and was going to get a K&N but they did not have that style....
Old 02-10-2009, 06:07 PM
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Check out my thread in the XJ Write Ups, section. Titled "Home Brew Cold Air Intak". It was actually my son's design....and he thought it up at 18.
Old 02-10-2009, 07:23 PM
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I got it at a local auto parts store Murrays to be exact it was in the ricer area not with the other filters
Old 02-10-2009, 07:23 PM
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and spectre makes it
Old 02-10-2009, 07:32 PM
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auto zone has them
Old 02-10-2009, 08:47 PM
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XJ?2010, Do you have any difficulties getting her through inspection with the CCV breather "only" on it? Thought it had to be captured and burnt in the system.
Old 02-10-2009, 09:03 PM
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well in michigan we dont have inspections and cops could really care less but there are other ways to do it w/o a breather. example these chrome tubes come in many different styles and you can get them with a little nipple on them so you can just plug that hose right onto it just like the stock airbox.
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Old 02-10-2009, 10:22 PM
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Old 02-11-2009, 03:22 PM
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