I've bought 24" Magnaflow muffler #12388 and y-pipe #10778.
As I was just about to get it installed, I ran into a post about CFM ratings (made by HammerZ71, I believe) , which placed my muffler at 767CFM, whilst stating that the maximum you should do is 600cfm to avoid damage and performance decrease.
What makes me even more worried is the addition of y-pipe, which would increase the cfm even more...?
Since some of you probably have this combination installed, could anyone share their experiences, and whether it's safe to install both?
I'm a little afraid since I have a 2014 Ram 1500 with only 200 miles...