Well i repainted my Valve Cover yesterday and it came out really Nice!(ill post pics in a min) ANd i put it all back together and what not...and then i took it out for like a hour and came back and pop the hood and realized that i forgot to put the ground wire underneath the screw on the VC.....does this harm performance?

 

I don't think it will, but just put it back on...

 

i did