fluttering sound

Hi, I am new to the forum and I have checked as many posts as I can stand looking for something similar to help. I can not find anything that satisfies an answer to my problem so here we go. I bought a 2008 Mustang GT about a month ago... This was great but I have started to find several issues...

Hello! After having my car Dyno tuned with the SCT X4 Tuner, I have noticed a slight fluttering sound coming from the front of my car when in lower RPMS / higher gears. This sound goes away from either being masked by the sound of my engine or just going away completely; when I accelerate...