Help please

[Leviaaronjones]

I've got a 2014 5.3L Silverado and yes it has the AFM I want it gone but for now I have to deal with it. I had a flowmaster 40 series installed and resonator cut off, and it is very quiet. I see no flapper valve so I am assuming that he cut it off to (which I was unaware of a flapper valve at the time). My question is, why is it so quiet? Does the AFM make that big of a difference In sound even when in v8? Is the flapper valve still there? Did the guy do something to make the truck quieter (we had a small disagreement while he was installing the system, and after he was done he said "if you ever want it louder we can cut off the 3rd cat"). Any help is greatly appreciated and I am going to try and put pics in the comments cuz it will not let me in the the post.

[Leviaaronjones]

[Leviaaronjones]

And that is literally the only pic it will let me upload I sat here for 20 min trying to adjust my camera settings and still nothing.

[txab]

Try hosting your pics on pic hosting website and then link to them here

[1SLOW1500]

Use taptalk to host pics and videos. First guess, I would say muffler is backwards.