Operation CSL Airbox - Retrofitting to E46 m3

Hi Guys

We were keen to retrofit a CSL airbox to the e46 m3 well coz it sounds freakin awesome. Looks pretty bolt on and plug and play right?
Let me begin with our 3 day journey which involved giggles, frustration, strippers, pizza, lots of silicone and 3 which then grew to 5 (coz it was just sooo much fun) team of regular okes hunting for the csl growl




going into this badboy


DAY 1
Getting the stock airbox off. Simple right? lets find out...
We had to remove the AC schnitzer anti-roll bar, airbox, plenum, maf sensor as its not needed - CSL airbox runs on alpha-n software to manage airflow.


no not really lol


Aha! Lets remove the microfilter section :thinking:


Hey where's the dipstick gonna go :thinking: Ok we'll get back to that later...


Lets get those clamps from the throttles off


Awesome stock plenum is coming off :clap: so far so good. That only took us 2hrs :mmm:




It was a friday night and Burgy had a date so we called it a night

DAY 2 : - getting the csl airbox on

Getting the clamps on


Ready to go in? Lets find out..


We managed to bend the oil dipstick out of the way :thumbsup:


Then we discovered that the stock breather and pcv pipes werent going to work as one was short and other couldnt bend to position so we needed to modify the pipes. Ran over to builders warehouse to do some shopping.

ai what a mission

looks like a hell of a lot of work.

best part is what i mentioned above is only like 60% of the installation :cursin:
Still busy resizing pics and doing rest of the write lol

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best part is what i mentioned above is only like 60% of the installation :cursin:
Still busy resizing pics and doing rest of the write-up lol
And there wasnt alot of space to work with so everytime we heard something that sounds like cracking or breaking as we squeezed it in we were like :mmm::mmm::bawling:

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here's what it sounded like after we were done!

nice stuff guys, when you have company its always nice to try and do these things:thumbsupasses the time actually

My facial expressions during those 3 days:

start: :excited: :thumbsup::smileysex: :clap:


During: :slap::nono::dropjaw::cursin:::hammerhead::thinking::throwup::argue:uke::drink:
:facepalm::bs::dunno::banghead::
:uhoh::uhoh:


me: :whip: :tashen (for talking me into doing it)


End: :woot::woot:

It was terrible. Nothing fitted like it should (according to us) We had to make a 'plan' for every step..

If I had to do it all over.. I'd take it to Gizmo!!

Sounds "ombeskof"

my dream...

looks and sounds great:thumbsup:, what did it cost if you don't mind me asking?

:drool::drool::drool: I WANT..

Nassar: An arm, a leg, a kidney and my sanity :wave:

very cool....Jealous is not the word!!


But I am loving the Real Madrid top :thumbsup:

that is one dirty engine bay!!!!!:hammerhead:

what gain one will achieve after this mod?:excited:

roughly about 12 wheel kw but i dont think true gains show on dyno unless there's a big enough fan simulating 160kmh

Tashen are you maintaining the flap or you going to leave it out?

Go check RBTS's dyno room, he has a 1.5x1.5m high speed electric fan built into the wall!!

George Smooth said:

Tashen are you maintaining the flap or you going to leave it out?

Click to expand...

the flap requires coding. Its for noise reduction anyway so most ppl remove it or just leave it out.

HA HA,,, Thats Burgy's ride.. I love that M3...

You guys did a great job. I too have sat in that very garage and messed around on my car with Steve. Good times.

Where did you guys source the box?

The sound is just electric!

so it is straight fit, no ECU issues? all works fine?

anybody know where i can source a CSL intake!!