Does this happen to anyone else while accelerating around 4K ? It happened today few times and almost everytime i try to boost around 3.5K-4K the needle drop down .2-.3K rpms suddenly. I have no mods and have both factory reflashes and have 5K miles.

I will appreciate any info.

 

You need to be more specific. Which gear are you on? Are you talking about in between shifts at 4k revs?

 

Can't really know what it's actually doing unless you post a video of it.
Maybe it's normal on X's.

Your still in warranty.
I suggest have a dealer look at it.