View Full Version : Hole in some BMW bumpers?


bitkahuna
09-06-07, 08:12 AM
What's the hole for? :p

http://www.elusivemedia.com/gallery/d/61822-1/IMG_6109-3.jpg

cherplex
09-06-07, 08:21 AM
They are trying to cool something ha ha.......

Koma
09-06-07, 08:27 AM
Those are aftermarket bumpers, I have no idea what use they would be for except cooling...

OC 335i
09-06-07, 08:38 AM
That is the CSL bumper, most likely it is a replica. It is either used for an offset foglight or intake.

Stage3
09-06-07, 08:58 AM
That is the CSL bumper, most likely it is a replica. It is either used for an offset foglight or intake.

Like was said, it's a CSL bumper which has the hole in it for intake purposes. Here is the engine bay so you can see where it's going...

http://www.strikeengine.com/technical_information/bmw-m3-engine-csl.jpg

Lexmex
09-06-07, 09:08 AM
Not sure that is going to do all that much, really needs an extension between the intake and that hole. Kind of reminds me of the stock RX300 setup with most of the air going through the hole on the driver's side bumper and eventually getting to this point in blue (the opening of a long tube that leads to the airbox).

Koma
09-06-07, 09:12 AM
Not sure that is going to do all that much, really needs an extension between the intake and that hole. Kind of reminds me of the stock RX300 setup with most of the air going through the hole on the driver's side bumper and eventually getting put to this point in blue (the opening a long tube that leads to the airbox).

The 1st gen SCs had a pretty awful design as well. It was a very large airbox but a small narrow snorkel that attached to it. The SC owners know it very well. And also a large intake cutout in the bumper but only a small corner of it used for the intake.

For a competition model like the CSL I would expect it to have a much better air intake, I'd like to see more pictures of it.

1SICKLEX
09-06-07, 09:12 AM
Correct, the Euro only CSL, that was for the intake.

Stage3
09-06-07, 09:38 AM
Not sure that is going to do all that much, really needs an extension between the intake and that hole. Kind of reminds me of the stock RX300 setup with most of the air going through the hole on the driver's side bumper and eventually getting to this point in blue (the opening of a long tube that leads to the airbox).

Not really... if you look at the where the hood closes, it has the typical 3 series air router that comes through the BMW grille. I'm sure that it gets plenty of air from that on top of the hole in the bottom. But, when you are trying to feed 6 ITB's... you could use as much air as possible.

Kind of like this aftermarket upgrade for the standard M3.
http://articles.motortoday.com/testdrive/M3/M3_engine.jpg

Lexmex
09-06-07, 11:57 AM
It's hard to see in that first photo, it just looks like a gap there.

rominl
09-06-07, 12:03 PM
Correct, the Euro only CSL, that was for the intake.
yeah i thought it's pretty commonly known already. csl bumper, no fogs to reduce weight, and that hole to take in cold air for the intake. the bumper design is a bit different from the normal m3 bumpers too

blacksc400
09-06-07, 12:19 PM
Dinan has dual intake holes for E39 M5 too. But they are installed on the lower bumper mesh.

Allen K
09-06-07, 12:49 PM
Kinda off topic, but with that bumper, the car looks so...jolly

miniround
09-06-07, 01:44 PM
ive always fashioned random offset holes and intakes and scoops for Rally cars. when the CSL came out i was like wtf? why ruin a nice front end with a hole. that would be sick if there was a tube that lead from that hole into the engine for air, but its just an opening to get air near the intake and then to cool the engine. haans and freid saw something useful in making that, so that's why its there haha.

FLIPPU
09-06-07, 02:04 PM
That there "Hole" is for the TOWING hook inside the emergency box in the trunk.

lol
:)
MIke

bitkahuna
09-06-07, 03:50 PM
Thanks for the responses everyone. :thumbup: :)

Woogie
09-06-07, 05:00 PM
Maybe it's for palpation. Google images --> cow palpation :D

whoster
09-06-07, 08:52 PM
I'm pretty sure the euro-spec M3 CSL actually has the intake leading down to that hole to suck in more air for the engine..

I think the model Bit posted was just the US spec version with a different bumper--hence the lack of piping for the intake.

STIG
09-06-07, 09:52 PM
that's CSL style yo! It also comes with cardboard trunk.

rominl
09-07-07, 12:07 AM
I'm pretty sure the euro-spec M3 CSL actually has the intake leading down to that hole to suck in more air for the engine..

I think the model Bit posted was just the US spec version with a different bumper--hence the lack of piping for the intake.
that's my guess as well, i thought they have the whole intake pipe down to the hole?