what is this ground wire for and wheres does it bolt too.

 

I removed all my emissions on my NA and I couldn't find that ground anymore. So I used that ground to get rid of my 3800 rpm lag on my NA. I used a higher gauge wire (not sure what size) but I just bolted it to one of my transmission bolts. Fixed the lag, and the car runs great.

 

just bolt it to a bolt in the tranny that is where it is hooked on mine