Can you narrow it down to the general area of the engine it's coming from? Such as top or bottom, rear, front...

 

First, you haven't told us very much. You have a noise, located on the driver's side somewhere between the nose and the driver's seat. Do you know how many possibilities exist?

Try narrowing down the problem. Does it occur all the time? Only certain times? When the engine is cold? Hot? Does the sound change? What makes it change? Is it variable with road speed, engine speed, both? Only in a certain gear? Any performance issues resulting?

Post the video to Youtube and link it here so we can all hear it.

 

 

Hmm. Post the video for sure.

If you put the trans in manual and hold the motor at 2200, right before the shift would occur, is it constant? I'm wondering if it's a heat shield or something, and just vibrating enough at some resonance point.

 

 

I think I can hear some denotation, maybe some bad gas??

 

I can't hear much. I wouldn't expect detonation... that would usually get worse as engine load increases. But, you could always watch the knock PIDs with an OBD reader to see if engine knock is detected.