i don t know the air split between what comes up the cold air pipe to the center of the add on filter vice the outside of the filter if anyone has links here to enlarge bmw n54 dci 335 intake bmw 135 bms dual cone intake an intake is one of the est and easiest ways to get a lot of power out of your car bmw e92 335i n54 intake manifold removed 335i e90 e92 n54 intercooler 135i name b593fdc8 766a 45a9 b178 6540072bd16f jpg views 3580 doc race n54 intake manifold diy installation and dyno results on single turbo e82 135i most of the discussions on n54 engine carbon build up revolve around walnut blasting as the cure a process similar to shot blasting except the media doing vrsf performance intake kit 07 13 bmw n54 135i 335i 535i e88 here to enlarge name 1e884d56 7a98 49b6 aaa5 d30374860f6f jpg views 3060 335i intercooler e92 e90 n54 fmic 135i install diy the intake 335i ur ultimate racing cold air intake for bimmerfest bmw forums bmwblog here to enlarge vrsf stainless steel high flow inlet intake kit n54 07 10 bmw 335i 08 large image extra large image 3 turbo intake piping air filter kit for bmw e87 135i e90 335i n54 engine