Headers and catted h pipe

I have the mac lt's and catted h with a magnaflow catback, and it is real nice at start up, one neighbor always comments that he knows when I start my car and the neighbor up the street just recently commented that my car sounded awesome and that they could always tell when I drove by. Not too loud cruzing and very powerful sound at wot !!!
 
everyone says that LTs don't make much sound difference at idle, but mine definately did! It's not a whole lot louder but its definately noticeable.