Does it increase pops, bangs, burbles, crackles, etc?

The Exhaust Controller will keep the valves open all the time, instead of just some of the time in "loud" sport / race / dynamic modes. This means that more pops, bangs, burbles, crackles, etc. could be heard more if they were otherwise muffled by having the valves closed. For example on lower RPMs and when letting off the throttle when the valves are sometimes normally closed.

The amount of pops, bangs, burbles, crackles, etc. are created by the car's drive mode / engine mapping / tune, not by the physical exhaust / valve design. The exhaust setup will simply make them more or less noticeable.

With the controller keeping the valve/s open fully all the time, it'll be the maximum sound of the pops, bangs, burbles, crackles, etc. that the engine produces.