I noticed at start up and shut down, that my engine is making a strange noise. Its not loud, but noticeable, it sounds like the start might be engaging a second longer but its not, similar when I shut down the engine. It just sounds like metal doing something, I cant explain it. I hope that supposed pinging didnt damage my engine, after all my Mass air flow sensor was un-plugged and service engine light was on, maybe it was too much fuel, I dont know. I hope it didnt do any damage.

Im thinking about taking it to the shop and having the front suspension inspected.