Dyno result with Carbon airbox

i can see those are wise words

what about the carbon plenum though and airbox, that must have some benefit on its own?

Edited by Hoover

Uwe, thats great results

how much for the carbon unit and how many differernt types are there as there is a few different kits for it?

Edited by paddym3

M3Nally wrote: Uwe, with regard to the extra noise the CF airbox makes, is this down to resonance and if so would making an airbox in thicker CF or fibreglass be quieter like for everyday use. If no fibreglass option available, then thicker CF would be much more expensive no? Are the gains purely down to the increased airbox volume, or down to the design improving airflow or both?

Most of the noise is come from than MASSIVE SQUARE HOLE behing the grill which is the intake snorkle.
Whatever layer thickness you do with the box, it will only make a small difference.
Regarding your other questions, I don't know. But who cares, it works

Even this was already LOUD


Edited by UweM3

As Uwe has infered, the removal of the standard airbox is the cause of the sound increase. This is due to the sound dampening within the standard airbox volume.

It's often refered to as a "Helmholtz resonator" , which is basically a 'air damper' in this instance and can be tuned to decrease intake noise. The volume is whats important, it works by being in tune with the oscilating sound waves produced by the combustion process.
BMW used something similar on the e34 M5 (item 17 in the below pic.)

It 'could' be possible to have a tublar take-off in between the airbox and the snorkel to a chamber similar to the one on the e34. I ONLY SUMMISE at this point however, but I think it could work.