Making custom exhaust for 2012 135i n55

Here a video on how I made a open side dump on my 2012 135i mpackage with n55 motor
Comment on if this helps in any way or if you have questions. Also any tips on how to make my videos better as well.

[@-Antt.]

Is that gas less flux??

[@blvckhvrtt]

I was using a mig with flux, but really you wana use a tig with argon
But you gotta do whatcha gotta do