[Smith_2.0t]

Just wanted to ask and see if this is normal or if there's something wrong. I have a 2013 2.0T automatic with an HKS BOV, Injen intake, and a 1.5 Stage SFR tune, ISR O2 housing running to a single exit exhaust. When driving and building up boost and I let off the gas, I hear a weird noise before the bov sound, and sometimes my car jolts while doing so. Almost sounds like 2 separate bov sounds. Other gennys with similar setups don't do this and I'm wondering how to fix it (if there's anything need fixing)

 

[Mr.Camero_2014_2.0T]

Is your BOV connected straight into intake manifold or to the boost solenoid?

 

[Mr.Camero_2014_2.0T]

On the 2.0t the engineers call this jolt/kickback a collision.
It's when too much turbo is built and not able to escape easily and takes a second to lower boost.
The question about where is the BOV connected to is because the turbo boost solenoid prevents this same thing from happening.