Technical Difference(s) in M156 Air Inlets
Thread Starter
Junior Member
Joined: Jul 2015
Posts: 18
Likes: 1
From: Dallas, TX
2008 E550 Sport (gone bye-bye) 2009 E63 (the daily)
Technical Difference(s) in M156 Air Inlets
Just wondering if anyone knows why MB/AMG changed the design of air inlet tubes on the 07-11 M156 engines, specifically part numbers, 156 090 02 29 and 156 090 03 29. I'm guessing that the little "box" in the center (03 29) is some sort of silencer but why did they feel it was necessary and did it make any difference in performance?
Super Member
Joined: Dec 2009
Posts: 748
Likes: 93
From: Dhahran, KSA
2020 E 300 Coupe and 2019 GLS 400
My ML has the old intake tube without the black-box thing. I think it's an intake resonator, helps with the noise and the waves resonating back and forth, I could be wrong though.
MBWorld Fanatic!
Joined: Apr 2009
Posts: 6,026
Likes: 533
From: Alexandria, VA
07 E63 AMG, 10 C63 AMG, 07 E63 Designo, 07 E350, 09 C300, 07 C230
I don't have that on my 07 E63, but I don't understand when you say helps with the noise? What noise are your referring to?
Super Member
Joined: Dec 2009
Posts: 748
Likes: 93
From: Dhahran, KSA
2020 E 300 Coupe and 2019 GLS 400
Intake noise. These might help:
https://physics.stackexchange.com/qu...helmholtz-work
http://www.ehow.com/info_12156112_ai...onator-do.html
https://physics.stackexchange.com/qu...helmholtz-work
http://www.ehow.com/info_12156112_ai...onator-do.html
