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Go Back   E46Fanatics > Tuning & Tech > DIY: Do It Yourself

DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 08-14-2008, 02:06 AM   #41
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Originally Posted by greekpsycho View Post
I actually did this DIY a while back...Interesting how similar yours looks to mine. Although I sacrificed the velocity stack design for safety reasons. I left my panel K&N filter instead and i didn't run my piping down directly to the fog light. I ran it behind my lower grille so that it would catch large debris that would otherwise end up in my airbox. Also, not having it meet a sealed opening on the front of the car lowers the risk for vacuuming up large amounts of WATER! I used PVC about 2 years ago and it still looks good. I also cleaned up some of the tabs on the inside of the box and painted the whole thing in Ceramic paint... The best part is the suction noise it creates, AWESOME! Along with the Shark Injector, some very noticeable gains.
great minds think alike lol
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Old 09-15-2008, 06:11 PM   #42
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Ram AIR OWNZ!.. great MOD bro bro!!

Im gonna get a COSMO RACING INTAKE HEAT SHIELF for like $100 bucks, i have a CONE SHAPPED OPEN ENDED FILTER on my car already.. Not running a Stock Box and it sounds great and MPG jumped drasticallly
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Old 11-11-2008, 10:26 PM   #43
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Water + Intake = Explosion. Seen an engine that had a piston go though the side of the block and damage other components at one of my mechanics shops. He said it was because the engine sucked in water. I don't know how factual this is, but it makes me afraid to do anything more than the K&N CAI and water sock to my intake.

From Wiki:
Hydrolock (short for either hydraulic lock or hydrostatic lock) is a condition of an internal combustion engine in which an incompressible liquid has been introduced into its cylinder(s), resulting in the immobilization of the engine's pistons. The liquid causing this malfunction is often water, hence the prefix "hydro-". Hydrolock occurs in a 4-stroke engine when liquid is sucked into the engine's cylinder(s) during the intake stroke and, due to the incompressibility of the liquid, makes the compression stroke impossible. This, in turn, prevents the entire engine from turning, and can cause significant engine damage if one attempts to forcibly turn over or start the engine. Typically, connecting rods will be bent, making the engine uneconomical to repair.
You guys should definitely be careful with this mod, also search google for hydrolock, it isn't pretty.

Here's one thread from a corvette forum:
** Tim330i waz hur **

Last edited by AntB; 11-11-2008 at 10:28 PM.
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Old 02-24-2009, 09:38 PM   #44
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nice ideas... keep em coming.

Last edited by chanlon7; 02-24-2009 at 10:10 PM.
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Old 02-25-2009, 03:50 PM   #45
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well ill be god damned thats a nice intake setup
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Old 02-25-2009, 04:12 PM   #46
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OEM intake box > *
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Old 02-25-2009, 05:04 PM   #47
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Yup. I've said it once and I'll say it again. The portion of BMW's R&D department dedicated to developing the airbox has a larger budget than any aftermarket supplier out there. The answer is not always "cone filter + heat shield".

Originally Posted by FTWeisse View Post
OEM intake box > *
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Old 11-20-2010, 04:54 PM   #48
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iam doing the same method for thanksgiving weekend holidays.
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Old 11-22-2010, 03:53 PM   #49
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Originally Posted by jelias714 View Post
iam doing the same method for thanksgiving weekend holidays.
good luck and post pics
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Old 01-29-2011, 02:46 AM   #50
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Originally Posted by Rayce185 View Post
The site says that the kit consists of the air duct, filter and CF airbox and costs 3500EUR
The radiator does look aftermarket though (silver etc) and it does seem to be lower as you said.

As far as I recall I don't have a fan in front of my radiator, so I can just install this duct system (DIY of course) right up to the kidneys.

Here's what I'm thinking:

DIY the stuff circled in red. Either made of metal, plastic or custom made CF
The turquoise would be where the MAF is positioned.

Now for us 323/328 owners: We can get gains by installing an M54B30 intake manifold, and they are not minimal either, as far as I've heard. Good part: THAT'S STILL POSSIBLE by going with the frontal RAM intake DIY.
I know its a old post but I can see this overheating since it covers almost all the radiator.
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Old 02-02-2015, 01:02 AM   #51
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I want to see the pictures... :'(

Someone can upload again??
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Old 02-03-2015, 02:48 AM   #52
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Originally Posted by JoeTe View Post
I want to see the pictures... :'( Someone can upload again??
Here are the photos from the OP's original 2008 post.

Images from post #1 (Image 1, 2, 3, 4):

Images from post #11 (Image 1, 2, 3):


DIYs help you save money with repairs; let www.bmwpnpc.com help you save money with the parts.
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Old 02-03-2015, 01:44 PM   #53
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That's cool, but unless there's something similar mounted directly to the throttle body (which on our cars would be of questionable use anyway) it's not a velocity stack. The picture below is of velocity stacks. That said, this mod can't hurt!

It's kind of funny how some people still insist the OEM box is better than anything else because BMW would have spent more time and money on it than any aftermarket company though. If your goal is an airbox with decent flow that absolutely must be quiet, durable, resistant to all kinds of weather (including a certain degree of flooding) and fit a budget to keep the cost of the entire car down, then yes, BMW's is the best. If you want the best performance you're better off going with a company that doesn't need to worry about the intake being quiet for the average driver or how that extra dollar or two adds up in a production run of over half a million per year.

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