Engine Exhaust more on left side?

[vshupletsov]

Hey everyone,

I don’t know if this is an issue or it’s supposed to be like that, but I feel like I have more air coming out through my left side exhaust than on the right. My friends told me about it when I was revving and they were standing behind, and also on videos of me revving, you can see that all the steam/smoke is coming out the right mostly.
Is this normal or should I be concerned or can I somehow change it. Might it be the exhaust flap?

 

[Lynacchi]

The left side is continuous. On the right side is the flap control, which opens and closes depending on the RPM and driving condition.