BMW 3-Series (E90 E92) Forum - View Single Post - US Air Intake Mod (EURO MOD) Pics Inside.

adamsclubs · 01-04-2012, 09:08 PM

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.

01-04-2012, 09:08 PM	#61
adamsclubs Second Lieutenant 5 Rep 223 Posts Drives: 2011 328i sedan Join Date: Sep 2011 Location: CA iTrader: (0)	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.
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