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 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 exhaust. The exhaust setup will simply make them more noticeable.