so after ksfrogman said it was a silencer, i thought of making a diy to remove this thing.
So here it is.

Note: this was made with a simota air intake, if you want to know how to remove the oem air intake please see this tread http://www.e90post.com/forums/showthread.php?t=30688

step 1:

Release all bolts shown in picture 1, and disconnect the air flow sensor.



Step 2:

After you have removed the air filter housing, you need to remove the air intake tube. pull it of in the direction shown in picture 2.



Step 3:

nou you need to cut off the silencer, you can't pull it off because it is glued on to the ait intake tube, cut it off as shown in picture 3.



Step 4:

after you cut off the silencer the you have to put in a plug so it is sealed off airtight, glue the edges off the plug and fit it in to the air intake tube as shown in picture 4 and 5.




after that the tube will look like this:





Step 5:

Now put everything back on the car, like you got it off and then the fun begins.

Results:

my car is now more agressive on the throttle, and the sound is louder and deeper.

EDIT:

Video added: http://www.youtube.com/watch?v=NJFKERUikFc

Rody

__________________
Bmw 330i E90// Monaco blue // dakota beige leather

MOD'S: Full hamann package // engine displacement to 3.2 litre // 6000k osram // stinger dsi // black lines // Simota Racing cold air intake // full hamann interrior // Xenon interrior lights// Pmb // 19'' Breyton spirit's // Wilwood BBK// M6 winter set // Black cf // digital tv // ps2 // dvd player

On order: Cf Mirror cover // strut brace // oem cf rear spoiler // cf roof

Future mod's: ---


NEXT CAR: ?