Nope, haven't touched them.
I just got it back. I took it in hopes to get the tranmission jerking under control along with this pop resolved. They claimed to have fixed the tranny, and completed a cpu flash. The tech test drove it, heard the pop, brought it in to find the problem, couldn't, took it back and it stopped.
He had no idea but guessed it was some gravel or something stuck up there. Its possible since there is an apartment building being built right next door and the roads are litered with it.
Part of me wishes they would of found something, now I'll just be paranoid.
Junkie