I've watched dozens of youtube videos comparing the 14" Magnaflow to the 18" Magnaflow. I plan on just doing the muffler replacement. My biggest question is noise at idle while warming the truck up in the morning. I have remote start and live in a subdivision, sometimes I have to get up at 4:30 AM for work. I plan on taking advantage of the remote start during the winter and I don't want to piss my neighbors off. Is there a big difference between the two at idle? It's hard to tell watching videos. How much louder is it than stock at idle?