I just replaced the mounts in my 94 GT with energy suspension mounts. while I was at it I sealed up an exhuast leak that I have had since I installed the turbo. Now there is a really low drone at around idle, its like a 40hz frequency, it sounds almost like a subwoofer, even though the stereo is off 
Has anyone else had this problem, or is it some issue with exhuast components that I might not have ever noticed because I had a leak?
Has anyone else had this problem, or is it some issue with exhuast components that I might not have ever noticed because I had a leak?
