DIY 4 Inch Cold Air Intake
10-11-2012, 01:35 AM
#1
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DIY 4 Inch Cold Air Intake
Hello I'm fairly new to the forums and i have barely owned my 2003 Acura Cl 6 speed for less than a month (first stick car!)
I wanted to do some cheap mods so here is my first mod a
4 inch intake which costs around 30 dollars.
You will need
Home depot (what i used)
4 Inch ABS piping , got the precut was more than enough for about 10.83
4 inch to 3 inch coupler 8.50
http://www.homedepot.com/h_d1/N-5yc1...1#.UHZiZUbobTo
and a 90 Degree Elbow 4 inch 9 something or 8 something
For the suction line things
i used a barb tee from my previous car integra
http://www.team-integra.net/forum/19...l-meltman.html
is the first picture you will see the gold thing. was about 3-4 dollars from what i remember
First you will need to remove your stock intake
there are other posts here that show how to remove everything including the resonator from the bottom.
You will take the coupler and put the 3 inch side onto the throttle body opening. You will need to take off the plastic cover off of the top of the engine. You may need to remove the MAP sensor and all the suction lines and the throttle cable lines out of the way.
Don't be scared that it does not fit and there is too much slack.. i learned the hard way.. i bought a 4 inch to 2 inch and i ripped it because it was too small. This 4 inch to 3 inch coupler will fit , as long as you tighten the hell out of it. No issues or leaks or anything like that should look like this
After than you will need to measure the amount of 4 inch pipe you will need to cut (i used a 8.99 angle grinder from harbor freight) to make it all uniform like this
I apologize for not making measurements as i did this under 20 minutes because i was rushing to pick up my brother from school. I can go out and measure upon request.
As you can see i cut the premade pipe into two pieces.
Parts are in order:
Throttle body > 4 to 3 inch coupler > 4 inch pipe > 90 degree elbow> 4 inch pipe > filter
The pipe is just barely enough to fit down into the hole where the resonator was, you may need to force it in or bend some of the metal (i just rammed it in there)
Now you will need a filter that will fit the end of the 4 inch pipe. I'm using a rather large filter, AEM bruteforce that was put on a gmc suburban i used to drive.
looks like this
What i did is duct tape the filter to the end of the pipe lol. You can do it fancy and get another coupler 4 inch to 3 inch or 2 inch depending on your intake size, and the respective pipe size to tie it all up with hose clamps.
As for the suction hoses, i put the pipe in all plugged up as if i already had it and marked with a marker where to drill holes.
The closest one to the throttle body i just drilled a hole because the suction thing just enters on its own. You can make your own adapter if you like, i just used duct tape to seal it all up.
As for the other suction line, i used that tee barb i mentioned earlier.
Drilled a hole, and screwed it in, it looks like this
And there you have it, a DIY intake for under 40 bucks. I know ebay has short rams for 38 dollars, but i wanted something larger than 2-3 inch piping.
"If ya want something done right you gotta do it yerself!"
As for any noticeable gains, the butt dyno sure feels like it did.
I have the peace of mind of larger tubing if the stock tubing or aftermarket tubing wasn't big enough.
Good luck and have fun! Ghetto for life!
Ps. I wrapped the Piping with exhaust wrap to minimize heat soak (it gets really hot!) and it looks better now.
Here is a sound clip of vtec. Not sure if you can hear it because i removed the stock axlebacks and its pretty loud lol.
Ghetto DIY ftw! Take care all god bless
I wanted to do some cheap mods so here is my first mod a
4 inch intake which costs around 30 dollars.
You will need
Home depot (what i used)
4 Inch ABS piping , got the precut was more than enough for about 10.83
4 inch to 3 inch coupler 8.50
http://www.homedepot.com/h_d1/N-5yc1...1#.UHZiZUbobTo
and a 90 Degree Elbow 4 inch 9 something or 8 something
For the suction line things
i used a barb tee from my previous car integra
http://www.team-integra.net/forum/19...l-meltman.html
is the first picture you will see the gold thing. was about 3-4 dollars from what i remember
First you will need to remove your stock intake
there are other posts here that show how to remove everything including the resonator from the bottom.
You will take the coupler and put the 3 inch side onto the throttle body opening. You will need to take off the plastic cover off of the top of the engine. You may need to remove the MAP sensor and all the suction lines and the throttle cable lines out of the way.
Don't be scared that it does not fit and there is too much slack.. i learned the hard way.. i bought a 4 inch to 2 inch and i ripped it because it was too small. This 4 inch to 3 inch coupler will fit , as long as you tighten the hell out of it. No issues or leaks or anything like that should look like this
After than you will need to measure the amount of 4 inch pipe you will need to cut (i used a 8.99 angle grinder from harbor freight) to make it all uniform like this
I apologize for not making measurements as i did this under 20 minutes because i was rushing to pick up my brother from school. I can go out and measure upon request.
As you can see i cut the premade pipe into two pieces.
Parts are in order:
Throttle body > 4 to 3 inch coupler > 4 inch pipe > 90 degree elbow> 4 inch pipe > filter
The pipe is just barely enough to fit down into the hole where the resonator was, you may need to force it in or bend some of the metal (i just rammed it in there)
Now you will need a filter that will fit the end of the 4 inch pipe. I'm using a rather large filter, AEM bruteforce that was put on a gmc suburban i used to drive.
looks like this
What i did is duct tape the filter to the end of the pipe lol. You can do it fancy and get another coupler 4 inch to 3 inch or 2 inch depending on your intake size, and the respective pipe size to tie it all up with hose clamps.
As for the suction hoses, i put the pipe in all plugged up as if i already had it and marked with a marker where to drill holes.
The closest one to the throttle body i just drilled a hole because the suction thing just enters on its own. You can make your own adapter if you like, i just used duct tape to seal it all up.
As for the other suction line, i used that tee barb i mentioned earlier.
Drilled a hole, and screwed it in, it looks like this
And there you have it, a DIY intake for under 40 bucks. I know ebay has short rams for 38 dollars, but i wanted something larger than 2-3 inch piping.
"If ya want something done right you gotta do it yerself!"
As for any noticeable gains, the butt dyno sure feels like it did.
I have the peace of mind of larger tubing if the stock tubing or aftermarket tubing wasn't big enough.
Good luck and have fun! Ghetto for life!
Ps. I wrapped the Piping with exhaust wrap to minimize heat soak (it gets really hot!) and it looks better now.
Here is a sound clip of vtec. Not sure if you can hear it because i removed the stock axlebacks and its pretty loud lol.
Ghetto DIY ftw! Take care all god bless
The following 2 users liked this post by jaeravenal:
cleptosis (11-06-2013),
mikebikelife (11-09-2012)
10-11-2012, 11:00 AM
#2
I'm new here, so I don't know much about the J32, but I can't really see the benefit in using a 4" pipe.
And again, I know nothing about the J32, but in other cars I've had going to a bigger diameter intake could throw off the MAP/MAF sensor and cause it to run lean/rich, although I forget which one is thrown off (MAP vs. MAF) and I certainly don't know which one we have.
Nonetheless, I admire your ingenuity and willingness to do the project :-)
And again, I know nothing about the J32, but in other cars I've had going to a bigger diameter intake could throw off the MAP/MAF sensor and cause it to run lean/rich, although I forget which one is thrown off (MAP vs. MAF) and I certainly don't know which one we have.
Nonetheless, I admire your ingenuity and willingness to do the project :-)
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jaeravenal (10-11-2012)
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jaeravenal (10-11-2012)
10-11-2012, 01:09 PM
#5
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Thread Starter
I'm new here, so I don't know much about the J32, but I can't really see the benefit in using a 4" pipe.
And again, I know nothing about the J32, but in other cars I've had going to a bigger diameter intake could throw off the MAP/MAF sensor and cause it to run lean/rich, although I forget which one is thrown off (MAP vs. MAF) and I certainly don't know which one we have.
Nonetheless, I admire your ingenuity and willingness to do the project :-)
And again, I know nothing about the J32, but in other cars I've had going to a bigger diameter intake could throw off the MAP/MAF sensor and cause it to run lean/rich, although I forget which one is thrown off (MAP vs. MAF) and I certainly don't know which one we have.
Nonetheless, I admire your ingenuity and willingness to do the project :-)
I know that a 4 inch intake on a 4 cylinder is overkill, but J32 is 6 cyl, so i wanted to be safe and go big lol.
Only thing i've seen so far about 4 inch intake is forced induction 4 cylinders such as f/i b16, b18s talking about how they wanted to go to 4 inchs. They were probably 250whp+
As for N/A engines, i am totally not sure but i feel safe ^_^ Thanks for the input!
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mikebikelife (11-09-2012)
10-11-2012, 01:12 PM
#6
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Thread Starter
As it seems so! Hopefully lol
ALso i forgot to point out i read this from this thread
http://www.team-integra.net/forum/14...read-here.html
That increasing the diamter or chamber size will cause turbulence, but reducing the size just before the throttle body opening will help reduce turbulence...
as the thread says,
and the 4 inch to 3 inch adapter is a perfect tool for that
ALso i forgot to point out i read this from this thread
http://www.team-integra.net/forum/14...read-here.html
That increasing the diamter or chamber size will cause turbulence, but reducing the size just before the throttle body opening will help reduce turbulence...
as the thread says,
and the 4 inch to 3 inch adapter is a perfect tool for that
10-12-2012, 08:27 AM
#8
^ lol..
and that's NOT a CAI
that's dubbed a G-take (for ghetto intake!!!!) LOL reminds me of my buddy's intake he made... not saying it's bad just saying it's a G-take... and will forever remain as one..
all home made none metal intakes ARE G-takes.... let it be known. ahahahah
and that's NOT a CAI
that's dubbed a G-take (for ghetto intake!!!!) LOL reminds me of my buddy's intake he made... not saying it's bad just saying it's a G-take... and will forever remain as one..
all home made none metal intakes ARE G-takes.... let it be known. ahahahah
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jaeravenal (10-15-2012)
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jaeravenal (10-15-2012)
10-13-2012, 08:35 AM
#12
I was thinking about making a 4" intake using the Airaid 4" UBI(u build it) kit. It comes with different angle and size piping, clamps, filter, etc. You just need to buy a 3" to 4" coupler. This would cost a lot more than a ghetto rig tho.
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10-13-2012, 09:37 AM
#13
Chapter Leader (Southeast Region)
Wow thanks for that idea, I'm probably going to use it to make one for my car. Also I looked at the parts catalog and it has a 4"to 3" reducer
10-13-2012, 01:13 PM
#14
10-14-2012, 10:58 PM
#15
All motor
AIRAID looks pretty good. It's made of plastic so it won't get as hot as the aluminum intakes. It also comes with 30/60/90/45 degree bends so you can choose which to use. Only problem is you don't use it all so you end up paying for more than you use. I guess you could always sell the excess though.
10-15-2012, 02:24 PM
#16
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10-15-2012, 02:25 PM
#17
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Thread Starter
^ lol..
and that's NOT a CAI
that's dubbed a G-take (for ghetto intake!!!!) LOL reminds me of my buddy's intake he made... not saying it's bad just saying it's a G-take... and will forever remain as one..
all home made none metal intakes ARE G-takes.... let it be known. ahahahah
and that's NOT a CAI
that's dubbed a G-take (for ghetto intake!!!!) LOL reminds me of my buddy's intake he made... not saying it's bad just saying it's a G-take... and will forever remain as one..
all home made none metal intakes ARE G-takes.... let it be known. ahahahah
Lol, funny thing is all of my buddies say the same thing or similar to like "dang thats ghetto" lol. NO SHAME W/ MY GAME THO, i'm a cheap bastard lol.
G-take ftw! I'm so cheap i took off my mufflers and didn't go in and get straight pipes welded in so it just looks awkward lol.
10-15-2012, 02:27 PM
#18
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Thread Starter
oreilly auto, autozone, etc. they usually have K&n and spectre filters
ebay is your best choice in terms of finding one that will be a direct fit if you follow this guide, you will need a 4 inch opening of the intake
ebay is your best choice in terms of finding one that will be a direct fit if you follow this guide, you will need a 4 inch opening of the intake
10-15-2012, 02:29 PM
#19
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Oooo, just looked it up, looks pretty neat! definitely cleaner looking than a G-take. Can definitely make some wild intakes w/ those build it kits.
10-15-2012, 02:33 PM
#20
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Hey yall,
There is an AEM bruteforce on ebay for sale, i'm still waiting for it i'm going to see if it fits. (it's a 4 x 9 filter)
But 21.50 shipped for a filter like this, i wouldn't pass it up! I paid 60 for my previous 3 inch one.
http://www.ebay.com/itm/AEM-9-X4-CON...&forceRpt=true
There is an AEM bruteforce on ebay for sale, i'm still waiting for it i'm going to see if it fits. (it's a 4 x 9 filter)
But 21.50 shipped for a filter like this, i wouldn't pass it up! I paid 60 for my previous 3 inch one.
http://www.ebay.com/itm/AEM-9-X4-CON...&forceRpt=true
10-15-2012, 04:11 PM
#21
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Personally I would just get a knn from autozone or something, and pick up a cleaning kit while you're at it .
Good luck with your shifts, I drive an auto but all my friends drive stick , I learned in their cars and I'm pretty good now .
Good luck with your shifts, I drive an auto but all my friends drive stick , I learned in their cars and I'm pretty good now .
10-19-2012, 10:26 PM
#22
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Just a heads up, the 4 inch by 9 inch filter will not fit, it is STILL TOO SMALL lol.
Actual diameter of the pipe is 4.5 , pretty huge. I ordered a beastly 5 x 9 filter dry flow for diesel trucks, i'll see how it goes!
Actual diameter of the pipe is 4.5 , pretty huge. I ordered a beastly 5 x 9 filter dry flow for diesel trucks, i'll see how it goes!
10-27-2012, 06:31 PM
#24
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10-28-2012, 10:20 AM
#25
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what do you mean it didnt fit? as in it was larger than the piping? If so buy one that is 4.5"
http://www.knfilters.com/news/news.aspx?ID=884
And please get the ductape off there. I know you are cheap but if you are too cheap you can risk damaging your motor!
http://www.knfilters.com/news/news.aspx?ID=884
And please get the ductape off there. I know you are cheap but if you are too cheap you can risk damaging your motor!
10-30-2012, 12:01 AM
#26
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what do you mean it didnt fit? as in it was larger than the piping? If so buy one that is 4.5"
http://www.knfilters.com/news/news.aspx?ID=884
And please get the ductape off there. I know you are cheap but if you are too cheap you can risk damaging your motor!
http://www.knfilters.com/news/news.aspx?ID=884
And please get the ductape off there. I know you are cheap but if you are too cheap you can risk damaging your motor!
its for diesel trucks
Yeah i'm working on it, luckily in town someone wants to trade for a 4.5 afe dryflow.
sometimes cheap is too cheap lol , luckily the ductape is on the outside so there is no way it will get sucked inside!
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jaeravenal (10-30-2012)
10-30-2012, 12:21 PM
#30
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DIY 4 LIFE no forks no spoons in my just hands, no cups or mugs in my house, just hands.
no refrigerator or freezer just the cold nights and an igloo!
no toilet paper in my house just a bucket and the sink.. and my hands!
7 days worth of clothes? no 1 shirt 1 jeans 1 sox 1 boxers 1 shoes all i need? thats what HAND washing is for!
power tools? i got my hands
driving a 2003 acura cl? i got my hands. i mean feet
no refrigerator or freezer just the cold nights and an igloo!
no toilet paper in my house just a bucket and the sink.. and my hands!
7 days worth of clothes? no 1 shirt 1 jeans 1 sox 1 boxers 1 shoes all i need? thats what HAND washing is for!
power tools? i got my hands
driving a 2003 acura cl? i got my hands. i mean feet
10-30-2012, 12:22 PM
#31
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97BlackAckCL (11-09-2012)
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jaeravenal (11-09-2012)
11-09-2012, 07:00 PM
#37
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Vtak does sound obnoxious now
11-09-2012, 07:05 PM
#38
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Update, i used an AFE 4.5 inlet dryflow filter that fit like a glove onto the piping size. Though i have a small clearance issue as the piping i had to bend a little bit to fit the filter its a rather wide filter, if you go with your normal conical filter (probably about 5 x 5 something small not wide) made not made for diesel trucks you wont have hood clearance issues as the piping. the hood clearance doesnt bother me as much as it properly closes though there is about 2 mm gap between the headlight gasket thing and the hood
http://motors.shop.ebay.com/i.html?_...506.m270.l1313
some examples, notice there are some that are oval shaped, those will have fitment issues
these woudl be ideal sizes
http://www.ebay.com/itm/AFE-POWER-24...sories&vxp=mtr
http://www.ebay.com/itm/K-N-Air-Filt...sories&vxp=mtr
please measure the space you have before this installation as i went through 2 filters that did not fit :[
Here is how it sounds at idle rev, driving video soon
http://www.youtube.com/watch?v=3ApYM...ature=youtu.be
i also added exhaust wrap to cover it up and make it look better
i do not have the part # for the filter as i traded it off of craigslist just my luck
please do not buy an extremely large one or you will have to do extra modifcations to make it fit!
plz dont get sizes like this lol
http://www.ebay.com/itm/K-N-Air-Filt...sories&vxp=mtr
http://www.ebay.com/itm/AEM-Brute-Fo...df7bac&vxp=mtr
^^^^ this one i bought and it didnt fit the pipe or the space behind the head lightswheel well thing
http://motors.shop.ebay.com/i.html?_...506.m270.l1313
some examples, notice there are some that are oval shaped, those will have fitment issues
these woudl be ideal sizes
http://www.ebay.com/itm/AFE-POWER-24...sories&vxp=mtr
http://www.ebay.com/itm/K-N-Air-Filt...sories&vxp=mtr
please measure the space you have before this installation as i went through 2 filters that did not fit :[
Here is how it sounds at idle rev, driving video soon
http://www.youtube.com/watch?v=3ApYM...ature=youtu.be
i also added exhaust wrap to cover it up and make it look better
i do not have the part # for the filter as i traded it off of craigslist just my luck
please do not buy an extremely large one or you will have to do extra modifcations to make it fit!
plz dont get sizes like this lol
http://www.ebay.com/itm/K-N-Air-Filt...sories&vxp=mtr
http://www.ebay.com/itm/AEM-Brute-Fo...df7bac&vxp=mtr
^^^^ this one i bought and it didnt fit the pipe or the space behind the head lightswheel well thing
Last edited by jaeravenal; 11-09-2012 at 07:09 PM.
11-10-2012, 12:42 AM
#39
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Thread Starter
Here is how it sounds hitting vtec. I need a better mount to mount an actual camera instead of my phone. and to get better sound quality and less vibration
http://www.youtube.com/watch?v=pYpA2...ature=youtu.be
chirping into 3rd? ouch crappy tires?
http://www.youtube.com/watch?v=pYpA2...ature=youtu.be
chirping into 3rd? ouch crappy tires?