I had a afe intake for a long time and never and issues till recently and I also went to the dealer to get the newer valve lifter and the loner they gave me (brand new 323i with 18km) has the shuttering too
but anyways... i took the intake off and still find the problem present
11 E90 ///
09 E92 335xi M-sport
06 Porsche Cayenne S
08 E90 328xi Gone but will never be forgotten!