I wanted to throw this out to all of you……is it worth anything (increased performance, low-end torque….) to replace the stock muffler or entire system. Some have added headers, BORLA dual exhausts, Flowmaster-Borla mufflers, etc. I'd like to get a little better sound but again, this is a V-6 and not a 5.0 Mustang. Thanks and appreciate the comments. I am also thinking about installing the TRD CAI once Toyota approves it for the 2014 FJC. Appreciate any and all comments.