I just got and installed the turbosmart plumback bov and its fluttering and chirping when revving the engine not sure if this is normal or not it didn't make this noise when I first installed it this started after driving around a bit it was pretty quiet at first. I took it out and lubed it made no difference still sounds strange high pitch chirp sound and lots of flutter everything seems to be installed correctly I'm going to go out drive it and take a video and post it on youtube maybe someone will know if its right or not.