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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 11-29-2004, 10:33 PM   #1 (permalink)
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I was just wondering what the diference between the intakes on Ebay are compared to something like the BMP intake.
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Old 11-30-2004, 12:06 AM   #2 (permalink)
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I was wondering this as well. BMP Designs High Flow Racing Intak seams more thought out and well created, but I don't know if it would have any benefits over a EBAY one.

I myself am in love with BMP Design, so Id rather spend the 120 dollars at BMP vs the 20 on ebay, even if they gave the same performance. Im a junky for BMP hehe =)

-Andre
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Old 11-30-2004, 02:42 AM   #3 (permalink)
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intakes dont make a difference on our cars even with heat shield ur best bet is to go get a k & n and keep the air box intakes give us nothing but sound i've tried it and i went back to k&n with stock air box
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Old 12-02-2004, 11:28 AM   #4 (permalink)
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Stock air box w/K&N. Custom CAI!!

K&N cone filters rated @ 8-900 cfm
K&N flat filters rated @ 450 cfm

What I did ensures constant cold air plus at speeds over 70mph = 1+ psi ram into the intake.

Lots of diff opinions on what works best.....I like my setup seems to work just fine.
$45.00 for the filter.
$15.00 for the CAI parts (Home Depot).
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Old 12-02-2004, 02:40 PM   #5 (permalink)
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like the emblem on it nice
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Old 12-02-2004, 02:45 PM   #6 (permalink)
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i was thinkin of doing a cold air intake on my car running it done right next to the front valence nest to the fog light (sorry to use ur pic bimmin)
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Old 12-02-2004, 05:27 PM   #7 (permalink)
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bmp's heat shield is a joke, btw.
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Old 12-03-2004, 12:14 PM   #8 (permalink)
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Quote:
Originally posted by guywithblack88e30@Dec 2 2004, 01:45 PM
i was thinkin of doing a cold air intake on my car running it done right next to the front valence nest to the fog light (sorry to use ur pic bimmin)
[snapback]242114[/snapback]

Keep the intake away from the tarmack...road surface temps can get up to 140? but this will depend on where you live and sesonal changes.
Plus going through the high beam was WAY TOO EASY...and the air flow is direct with very slight bending of the tubing. Almost a straight shot into the Air Box.

Those brake cooling ducts on the valence can be made more effective by replacing the stock tubes with some flexible hose and directing the air flow to blow at the base of the rotors. This is a future project for me. I'll post when completed.
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Old 12-03-2004, 04:44 PM   #9 (permalink)
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bimmin, did you notice a differnce in power when you put the in take there? and did you just cut the high beam away? i would like to know how you did it if you could
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Old 12-03-2004, 05:34 PM   #10 (permalink)
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There is no power, it's a waste of time. You would have to go WELL over 100 MPH to even gain a fraction of a psi. Also, I wouldn't reccomend making your "CAI" down by your foglight, unless of course you want to hydrolock your engine.
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Old 12-03-2004, 07:37 PM   #11 (permalink)
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Quote:
Originally posted by 87 325iS@Dec 3 2004, 04:34 PM
There is no power, it's a waste of time. You would have to go WELL over 100 MPH to even gain a fraction of a psi. Also, I wouldn't reccomend making your "CAI" down by your foglight, unless of course you want to hydrolock your engine.
[snapback]242979[/snapback]

Have to disagree with "well over 100"...@ 70mph the psi is at 1 and will climb from there...not much...but you will get increased / rammed air into the intake. And at speeds above 70 I do feel the diference.

As far as HP gains....its not much at all....the biggest restriction is the AFM. Up grade to Big Six AFM and you WILL feel the HP.

On my car I just removed the HiBeam bulb. And went to the Home Depot.

Plumbing Section:

1- 3" to 4" flexible reducer
1- short piece of 4" ABS pipe (I found some straight fitting Piece ..sorry don't remember what to call it)
1 Sqare Foot of 1/4" x 1/4" wire mesh (at the garden center)
1- lenght of 3" flexible ducting (Heating and AC section)


You should be able to figure it out from here...if not let me know and I will post some pics and better instructions.

It is really easy and nothing is bolted or strapped in!!
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Old 12-03-2004, 08:10 PM   #12 (permalink)
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some brain candy

http://www.bmwe30.net/cgi-bin/datacgi/data...0004&Section=03
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Old 12-03-2004, 09:08 PM   #13 (permalink)
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Quote:
Originally posted by Bimmin'88@Dec 2 2004, 11:28 AM
Stock air box w/K&N. Custom CAI!!

K&N cone filters rated @ 8-900 cfm
K&N flat filters rated @ 450 cfm

What I did ensures constant cold air plus at speeds over 70mph = 1+ psi ram into the intake.

Lots of diff opinions on what works best.....I like my setup seems to work just fine.
$45.00 for the filter.
$15.00 for the CAI parts (Home Depot).
[snapback]242010[/snapback]
hey what did you do for you car what kind of inatke did you do and can you explain it to me sexydylan05
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