Not a fan of "whats this noise" posts but im lost on this one and this place is the best with helping...
I hear it when im creeping up in drive-thrus. At a very low RPM as gas is starting i hear this annoying knocking/rattle. Anyone else chase a noise like this?
EDIT: mods are some basic bolt ons - Cobb kit with cat back exhaust and intake, and I think its got a turbosmart BOV. I assume if there was a tune it was wiped by the dealer who I bought it from at 8800 miles.