by the way, out of curiosity, i recorded my engine just after starting it on my garage (didn't drive it out) and here it is: [ame="http://www.youtube.com/watch?v=rslW8slGhRM"]2011 Accent Engine Sound[/ame].

i think i have that sound, but is quiet enough to hear it while driving. or maybe it's not that kind of "knocking" sound, i'm not sure.