I am just wondering on some general symptoms that would occur if the MAP sensor was mounted, but not completely tightened down. Thanks...

 

If you are really talking about the MAP, it would probably cause sluggish performance and poor gas mileage if it were leaking vacuum.

 

Yes, i am really talking about the MAP. And in particular, would i get anything like this? Car feels as if governed at 2800 rpm. Very bad sputter any gear at around 2800. Parked for testing. Plugs and O2 sensor on the passenger side look normal. Driver side plugs and O2 are black, and reek of fuel, although they are not soaked. The car is modified, like in the sig. Just happened to notice that the thing wasnt tightened down, and i think that it is possible that once the s'charger kicks in, this thing may be lifting to lose vac. Its just an issue i wanna eliminate or check further. Thanks for your time and suggestions...