I have the Atak, and the cold start is pretty damn loud. Driving around you can tell when it goes into 4 cylinder mode. The drone is not terrible, but I ended up throwing in the range afm disabler to keep it in V8 mode. I have the dual side exit, so not sure if the sound would be different while towing with the dual rear exit. While in the cab under normal driving conditions the exhaust just has a nice deep tone, when you get on it you definitely are reminded that you have that exhaust on there.