"One evening, a woman was working on completing a jingle to win a large cash prize from Carnation Milk.
Carnation furnished the first line, "I like Carnation best of all," and it was to be completed in 50 words or less.
A couple of months later, the woman was surprised when a Carnation Milk representative came to her door and told her her entry was the best, but it couldn't be published, and they were giving her a consolation award of $1,000.00.
Here is her entry:
I like Carnation best of all, No t*ts to pull, no s**t to haul. No barns to clean, no hay to pitch, Just punch a hole in the son of a b***h."

i like the hai as the best bang for the buck because it eliminates the bends/restrictions of the stock inlet, but i don't like oiled cotton and couldn't find a foam or paper equivalent to the 1550.

that upside down stock panel is interesting, but i didn't want to fab anything if i could help it.

so, given that andy has mesasuread a miniscule pressure drop across the stock panel filter (~0.15psi?) and suspecting that the worst of the stock inlet restrictions were upstream of the filer, i opted to Carnation the lower portion of the stock airbox. this has been talked about before, i think, but i don't recall any pictures.

i happen to like the stock tube from the panel filter to the tb. it's well engineered with strain/motion/thermal relief bellows in it to reduce stresses on the tb. i doubt that the alta tube is much better WITH A STOCK ENGINE.

here's the airbox [edit] with the first set of holes
https://www.northamericanmotoring.co...=17995&cat=500

the stock upstream inlet tube is so ugly, i really wanted off the car, but instead i've temporarily got in back on with the resonator cut off and those holes taped over and about 3" cut off the end that used to mate to the lower airbox.

i don't want a path from the engine bay to the interior, so i temporarily have the 1.5" hole through the partition to the cowl vent area blocked with tape. when i figure out if the inlet to the interior is on the passenger side and how i can block the passenger side of cowl vent compartment from the driver side, i'll open up the rear lower wall of the airbox and the partiton.

Oh, and "the power is much smoother.......it makes 12 hp..........it keeps the rear end AND the front end in place through the fast sweepers..the car was uncontrollable without it...."

 

Holey moley!!

Let's see some final pics when all is done.

 

Mmmmm ... Swiss Cheese.

Here's a VW version:

http://www.reimundez.com/vwmods/mods...eseairbox.html

 

obe wan,

quoting the japanese camp commander in "the bridge on the river kwai": i hav arreeddy given za ordah..

i found the entrance to the cabin right in the middle of of the cowl vent area, so i figured i could block the path to it from the right even though the area is messy with brake lines running through it. that meant i didn't need the partition, so i removed it and opened up the back of the airbox.

here's the partition removed:
https://www.northamericanmotoring.co...00&ppuser=4821

here's the back end of the lower airbox with holes added on 3 sides: https://www.northamericanmotoring.co...00&ppuser=4821

but the partition did support the ecu wire bundle, so instead of leaving that bundle dangling and close to a thicket of brakelines, i sleeved it with electrical flex protector and tied it off with 1/16" shock cord to the aluminum housing:
https://www.northamericanmotoring.co...00&ppuser=4821

the picture of the modded stock feed tube didn't turn out; i'll take it again.

there's no question that my car now has more power, but because i changed several variables at once (replaced surprisingly dirty OEM paper air filter with a UNI foam filter; replaced stock spark plugs with denso IK20s, disconnected the battery, and did the airbox mod) , i can't say if this mod made any power.

but what's for sure is the great supercharger whine i now hear when my foot's in it. this alone was worth the mod. i suspect my mpg will go down, since i'm winding it out all the time now to hear the supercharger. with the run on burble from my supertrapp when i let off, i now have good sounds coming and going







,

 

its wat i run on my vr6 now, werks great!


its the first time i've seen this on a MINI,

NiCE job, flyboy
[/quote]

 

This must be the season for putting holes in the airbox!!!!
I did mine last weekend. Rather than going the swiss cheese route, I put in a single 2.5 inch hole in the base. I dressed the hole buy puting in a press fit circular vent fitting that had a small bell mouth and a grill. My reasoning was that the current intake pipe is approx 2.5" dia, so putting in an other 2.5" hole will essentially double the airflow. Since I doubt the stock airbox chokes the air flow by 50%, doubling the available airflow should be more than enough. Also the airbox retains its stock look.
The difference in the car's performance was quite noticable. This may be because I am running a 19% supercharger pulley and the standard air box was not up to the duty.

 

Unifilter has some cool looking little filtered plugs if want your holes in the filtered side.

http://unifilter.com/online%20catalog/accessories.html

 

Another benefit would be reduced likely hood of hydro lock from a frontal water deluge through the snorkel; the water would have a quick exit.

 

::tis the season to be joly::
ha ha, its g00d clean/cheap fun, & it really werks

 

Sorry Joker, I didn't take any photos of the installation. But here is a picture of vent fitting and I have marked up Flyboy2160's picture where I installed the vent.

Aldo

 

 

aldo,

my picture is of the bottom of the box. did you put that vent in the bottom or on the top as mac was suggesting? [edit. actually the sides of the top make the most sense for the UNI plugs.]

 

Flyboy, yes the vent is at the bottom of the air box (ie the dirty side) The vent it's self does no filtering. The Uni plugs have a filter element, so you could put them though the top air box (ie the clean side) but I would seriously consider the filtering efficiency of these over the long term.

Aldo