Cold Air Intake-325i

Messages
402
Likes
0
Location
Washington State
#1
so last week, i designed and built myself a cold air intake. this thing is sick. i don't have any pix hosted, but if you'd like to see some, email me at ofwolfandman85@hotmail.com . if you don't have the opportunity to email me, i'll just explain basically how i did it. maybe it'll give you some ideas on how to go about your own, or maybe you'd even like to try my idea.

so basically, a few months ago, i bought a K/N cone filter for my intake. obviously, i had to bypass the old airbox, so the order of flow is as such: K/N filter, then the AFM, then the manifold vacuum tube. i heard that some people had removed a high beam to get cold air inside the car to the filter. i also heard that the method previously described would require a heat shield. i essentially said "screw that," and rather than bringing the cold air to the filter, i brought the filter to the cold air. so here's how it looks now: K/N filter, then a rubber adapter piece, then some 3" aluminum air duct tubing, then the AFM, then the manifold vacuum tubing. the only trick was to secure the filter to the bottom of the car. i did this by cutting a hole in that plastic thing on the bottom near the oil pan, which i'm assuming is there to protect the front side belts. the filter fit securely in the hole i cut, and then i further secured it with cable ties. it doesn't move at all when you grab it and try to shake it. i did bottom out once, as it is about 4 inches off the ground, and slightly in front of the wheels. so sweat...got a few scratches on the bottom of the filter, but at least i know it won't come out. as far as benefits, there's a difference in sound..it's louder than it was before i put it outside, i think because of the aluminum's sound generation qualities. also, call me crazy, or call it placebo, but i swear there's a noticable difference. ask for pix =)
 
Messages
880
Likes
0
Location
Pittsburgh, PA
#9
thats very creative. nice job. Is it a nice wheather car now? What happens if you hit a big puddle or something? Do you have one of those water stoppers?

It definitely is a cold air intake though. I bet it sounds great.
 
Messages
402
Likes
0
Location
Washington State
#10
mjbst111 said:
thats very creative. nice job. Is it a nice wheather car now? What happens if you hit a big puddle or something? Do you have one of those water stoppers?

It definitely is a cold air intake though. I bet it sounds great.

i live in seattle, so hell no it's not a nice weather car =) however, rain doesn't hurt it, although a big puddle would. however, the intake is in front of the tires, so as long as i don't tailgate, i'm safe. i don't have a water stopper, i'm sort of just praying..
 
Messages
880
Likes
0
Location
Pittsburgh, PA
#11
one thing i would do is check the filter for holes once in a while. Loose stones can do some serious damage. My fog lights have decent chips in them.

just a thought.

I'd love a cold air intake.... mmmmm.
 
Messages
402
Likes
0
Location
Washington State
#13
mjbst111 said:
one thing i would do is check the filter for holes once in a while. Loose stones can do some serious damage. My fog lights have decent chips in them.

just a thought.

I'd love a cold air intake.... mmmmm.

ya, i'm considering back-stocking k/n filters. if you look at that one pic where you can see my headlights, you'll notice that my left low beam is F*CKED up hardcore...still works but no outter lense. i have rocks on the road to thank for that. so yes, i will be periodically checking for holes, as i clean it at the same time i do my oil changes.
 
Messages
402
Likes
0
Location
Washington State
#14
chucko said:
NICE idea dude. This pic makes it look really vulnerable to stones, speed bumps and other road obstacles.

first off, thanks for the compliment. if you can't already tell, i'm pretty proud of it =) i go over speed bumps "asian style" and make an effort to get my left wheel over it first. although i have a curb on my driveway and have only messed up once, cuz i was going down too fast. just as long as the slope of the speed bump isn't too high, cuz the wheels follow just a few inches behind. just don't hit any cones, concrete medians or small farm animals. although i have to admit, a chicken in a filter would make a funny picture. for 15 bucks and a couple hours of labor (which would be much less the second time around) it was well worth it. although i did scratch the bottom of my filter...no sweat though. it will also never fall out..i have it secured by cable ties, plus i cut an exact hole in that plastic shield. the only downside to that particular location is that it's RIGHT underneath my radiator drain valve. so i just gotta hope it won't leak.
 


Top