US Air Intake Mod (EURO MOD) Pics Inside.
View Single Post
01-04-2012, 11:08 PM
Drives: 2011 328i sedan
Join Date: Sep 2011
Axis, the 3" duct is air tight. The gap you see in the picture has no impact.
I had tried a 4" ABS coupler (actually a 3" coupler with 3.5" ID), could not fit in the tight space.
Apex's mod is the best you can get with the stock box.
View Public Profile
Find More Posts by adamsclubs