The intakes on the 335 and Z4 are completely different. The reason I spent the $40 bucks for the Z4 is because the intake is perpendicular to the right side of the radiator (as you look face on or drivers side) and that intuitively seemed to call for a scoop which was face on and "scooped" the air towards the intake. I may be all wet but it makes me feel better.
Originally Posted by bear-avhistory
Wallet pain but no gain. For stock & light mods BMW's are pretty well engineered right out of the factory. Personally I would have to wonder what if anything they can add when the intakes are in a high pressure area to start with.
2015 Audi SQ5
2013 Porsche Boxster S
2009 335i Coupe Dinan S3
2006 BMW Z4
Last edited by LarkHouston; 01-11-2013 at 12:34 PM.