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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Cheap engineered Air scoops



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      07-30-2009, 11:38 AM   #1
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Cheap engineered Air scoops

I was bored for the past 2 days and decided to see if I could make some ram air scoops for my Beemer. I may have posted in wrong section... mods feel free.

Sheet metal from Home Depot($5.60, plus some metal cutting scissors,$14.00)



My reference for the design...Thanks aFe

This is some paper cut out I made of what the air scoop might look like. I work well with physical models that I can look at (Brainstorming).

Tools!! The pliers are used to bend the metal. The sheet metal was pretty tough to bend.

Prototype. I used the hammer to flatten out the curves.

The semi-finished product. I still have to adhere the side walls. I'll use metal "super strength" Epoxy adhesive.

Retrofit screw holes that will fit the top OEM air scoop. I test fitted the air scoops more then 10 times and made adjustments so it would fit as snug as possible.

I wore gloves most of the time but still managed to cut myself. hah.


After I bond the side walls I'm gonna install them and do some test runs. They should hold up to my predictions. I'm thinking of painting them Yellow. I'll post the finished product soon!.


I decided to paint them black.

Here's one of the air scoops installed.

Front view.


I have a short video that I'll post proving that air scoops DO work. I just need help posting the video. it's from You tube.
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Last edited by Nutballa; 07-31-2009 at 10:36 PM.
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      07-30-2009, 05:50 PM   #2
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I did the same thing, pretty easy, and well worth saving the cost of what they are to buy already made.

One tip, I used 3M double sided foam tape (same stuff to stick on spoilers and such), and they have held on since I installed about a year ago...and I have hit 150+mph more times then I should admit.

Oh and I painted mine black.
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      07-30-2009, 07:42 PM   #3
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cool. did it make any difference?
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      07-30-2009, 08:21 PM   #4
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sweet......your giving me idea's

tell us what the outcome is

gl
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      07-30-2009, 08:28 PM   #5
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Brilliant!
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      07-30-2009, 08:49 PM   #6
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Quote:
Originally Posted by Nutballa View Post
Beemer
http://www.boston-bmwcca.org/referen...er-Beemer.aspx

Cool idea though, looking forward to seeing how they look on your car.
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      07-30-2009, 08:56 PM   #7
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Thanks! Somebody has to suck up all those cig. butts tossed from cars in front of them, might as well be you.

(just kidding )
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      07-31-2009, 12:22 AM   #8
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Quote:
Originally Posted by raceyBMW View Post
I did the same thing, pretty easy, and well worth saving the cost of what they are to buy already made.

One tip, I used 3M double sided foam tape (same stuff to stick on spoilers and such), and they have held on since I installed about a year ago...and I have hit 150+mph more times then I should admit.


Oh and I painted mine black.
Nice!
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      07-31-2009, 12:23 AM   #9
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Quote:
Originally Posted by iheartsole View Post
cool. did it make any difference?
Not yep, I'll post once I install them. The bond is still curing...
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      07-31-2009, 12:31 AM   #10
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This adhesive is very strong! I had to use a drill to sand down the sides. I'll install them later on today. I cut them and made them a half inch shorted in the front




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      07-31-2009, 12:33 AM   #11
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Quote:
Originally Posted by jopa489 View Post
http://www.boston-bmwcca.org/referen...er-Beemer.aspx

Cool idea though, looking forward to seeing how they look on your car.

haha, my bad. Beemers stand for moto's. I forget.
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      07-31-2009, 12:41 AM   #12
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Quote:
Originally Posted by SennaZ View Post
Thanks! Somebody has to suck up all those cig. butts tossed from cars in front of them, might as well be you.

(just kidding )
haha. Once, I opened up my intake where the filter is and found some big ass moth, lol. This was before I made the scoops, so idk how it got in there.
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      07-31-2009, 10:29 AM   #13
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I took the car out for a drive this morning and did some pulls on a long stretch of road with 335i auto with paddle shifters. I noticed improved throttle response with the help of AFe's high-flow filter installed. IN addition, when I change gears the transmission seems smoother. This was noticeable around 50-100MPH. However, performance may have improved in a wider range of speeds. I only drove it for 15 minutes, plus i got freaked out when I flew past some parked cops.
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      07-31-2009, 10:30 AM   #14
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make sure we get some pics installed on the car if they fit good

iall pay you to make me a set
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      07-31-2009, 10:37 AM   #15
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I thought about this also, but I just paid for some (40 bucks or so)
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      07-31-2009, 10:46 AM   #16
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I would definitely paint those!
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      07-31-2009, 11:30 AM   #17
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Nice going. I really laughed when I saw those thick leather gloves and when I saw the cut with the plaster I nearly peed my pants hehehe. It would be cool if you could create a real size pdf with the cutout dimension for all the DIY dudes.
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      07-31-2009, 10:36 PM   #18
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Quote:
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I would definitely paint those!
Yeah, they look ugly without paint. I decided to paint them black.
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      07-31-2009, 11:08 PM   #19
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Quote:
Originally Posted by Nutballa View Post
I have a short video that I'll post proving that air scoops DO work. I just need help posting the video. it's from You tube.
Posted your video up for you here: http://www.e90post.com/forums/showth...=1#post5624414
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      08-01-2009, 08:48 PM   #20
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nice vid i always thought my scoops helped at higher speeds.
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      08-03-2009, 05:16 AM   #21
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Quote:
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There will always be an argument here. The problem is they cover up part of your radiator which inevitably must cause the car to run hotter. Without logging the difference, we don't know. This is the "give and take" on scoops.
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      08-03-2009, 10:20 AM   #22
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The technically don't cover up the radiator, because the slant at the back of the scoops will still allow airflow over the top portion of the radiator.
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