Karbonius Carbon Fibre Stock S54 Plenum

[maupineda]

Great job. Looks amazing in the Z4. What is the sound pipe/sound generator you mention? Did you put a pipe through the firewall to transmit intake noise into the cabin?

I miss an easy to access dipstick with my CSL box and dipstick. I stuck with the shorty CSL setup because I was silly and wanted to build a true "CSL replica". But honestly I don't know what BMW was thinking with the little dipstick, it's such a pain.

Curious if there is more clearance under the OE version of the Karb Airbox for the 3D Design power steering reservoir expansion tank. I have one I've been meaning to test with the Karbonius CSL Airbox.

Sent from my Pixel 6 Pro using Tapatalk

The Z4 chassis has a firewall opening for this purpose, the 3.0SI version had this sound generator pipe, and a guy from Germany built a version for the Z4M. the image below shows where it goes. in the photo below you can see it connects to the elbow, and from there to the firewall through a grommet.

[C///M]

I also tested the sound generator and it is loud, however, in the cabin the sound is a bit different and it masks the CSL warble a bit, but it does sound LOUD

And below the videos, this time I took it to redline. in the videos, the sound generator sounds nicer, but in the cabin is intense.

Great job. Looks amazing in the Z4. What is the sound pipe/sound generator you mention? Did you put a pipe through the firewall to transmit intake noise into the cabin?

I miss an easy to access dipstick with my CSL box and dipstick. I stuck with the shorty CSL setup because I was silly and wanted to build a true "CSL replica". But honestly I don't know what BMW was thinking with the little dipstick, it's such a pain.

Curious if there is more clearance under the OE version of the Karb Airbox for the 3D Design power steering reservoir expansion tank. I have one I've been meaning to test with the Karbonius CSL Airbox.

Sent from my Pixel 6 Pro using Tapatalk

[maupineda]

I finally finished my installation. I struggled big time with getting the intake elbow to stay, it would constantly slip off, tightening the clamp did not help, actually made it worse as it would slip out even easier. But a bit of ingenuity and all is good.

I used antislip floor tape and it worked perfectly.



I also added rubber grommets to the dipstick tube, adding the nut in my opinion adds stress to the carbon box that I rather don't want.



And here is the final product







I may go back to the CSL dipstick.

I also tested the sound generator and it is loud, however, in the cabin the sound is a bit different and it masks the CSL warble a bit, but it does sound LOUD

And below the videos, this time I took it to redline. in the videos, the sound generator sounds nicer, but in the cabin is intense.

Karbonius-OE-Style-Eventuri+SG

https://youtube.com/shorts/fpJopJ7H8Hw

Karbonius-OE-Style-Eventuri

https://youtube.com/shorts/eQr-MuqgYVE

[maupineda]

That is a good solution, I tried spacing the tube with a grommet, and then used another grommet inserted into the tube slot to just seat there, it looks odd. I may just put back the CSL dipstick and be done with it. I am not a fan of putting tension on the carbon airbox either as with time, vibrations may do no good.

[TeddybearCup]

Designed a super basic bracket for the oil dipstick, because my aluminum screwed together L brackets unscrewed from all the vibrations and started clanging against each other every once in a while. Super annoying!

I hosted the file on my site listing for folks with a printer. Not super motivated to print these out for people because of how small they are and how basic the design is, but can do so for anyone needing one.

[jylee05]

That sounds pretty darn good!

[TeddybearCup]

Quick audio clip of the intake with a 6" pod filter and a MAF setup I printed, OEM elbow. Took this with a Hero 8 taped between the SMG fluid reservoir and the fender. Figured some people might find this interesting.


EDIT:
Made a new revision of my printed intake that really let the intake sing IMO.
Thinner walls so less sound dampening.

FINAL EDIT:
1/20
Printed from carbon fiber fill polycarbonate and made available on 3dwardprinting.com for ordering.
The CF fill helped make the print so much nicer and the sound a bit louder yet. Pricy but worth it.

[maupineda]

I kept my CSL dipstick, but the Z4M has so much more room

[TeddybearCup]

I bent my dipstick to the right and made a basic bracket out of random aluminum to hold it to the airbox.

[PetrolM3]

Will have to see what people have done to their oil dipsticks but it’s here. Going to install either the Eventuri or Karb box first.

I'd recommend eventuri first - once you install the Karb box, you won't have a chance to test eventuri only for comparison reasons unless you remove the Karb box and re-install it again which is a decent amount of work... instead, you can easily swap the eventuri/stock intake....

[JDMaflac]

Will have to see what people have done to their oil dipsticks but it’s here. Going to install either the Eventuri or Karb box first.

[JDMaflac]

50 is nothing, it was 400 for me!!! US guys are so lucky

That is 25% of the Karbonius box...😲

Hey you're in Charlotte? I'm about an hour north of you. Would love to see that airbox sometime if you get it installed.

Sure! Might be awhile but i'm planning on installing the Karbonius box first and then install the Eventuri.

[Casa de Mesa]

Completely forgot about the “import duty” fee through DHL…

Hey you're in Charlotte? I'm about an hour north of you. Would love to see that airbox sometime if you get it installed.

[maupineda]

50 is nothing, it was 400 for me!!! US guys are so lucky

[JDMaflac]

Completely forgot about the “import duty” fee through DHL…