Ok today i was driving it for a little while, and nothing... it boomed 2-3 times, but who knows what that is..

The grinding didnt happen though...

I also didnt go on the high way... im gonna try and take it back on the high-way later... and see if it will do it again

I am also going to have a guy that knows what the hell he is doing look at it....

And also it might be the brakes, but what is the boom then, it happens most of the time when i take off, but for some odd reason that noise was happening yesterday when i was on the highway.

THe boom sounds almost like something is getting cought, then is getting broke free.