Alright everyone, maybe someone has experienced this before butI have a vibration coming from inside de cabin at exactly 4500 rpm on every gear (and when downshifting).
It sounds like a coin or metal to metal vibration but very high pitch. This sound progresses in pitch and pace as the RPM's increase. Has anyone had something like this before? It's almost like a "ticking"

Recently installed items have been a Blitz Drop In Air FIlter and a SPT Factory Boost Gauge - Everything else is Stock.


Any Input is greatly appreciated!
Thanks!!

 

It may be your shifter, I've heard a similar sound. Make sure the bolts are nice and tight and that there is plenty of grease at the ball at the bottom.

 

Either that or the engine mount is going..

 

Check also tranny mount.