Im gonna sound stupid here but not sure wat this is for il post a pic soon. But iv got a efi set up and there is a multiplug with i think 4 wires goin into it and a flat head screw for adjusting something wat is it? Cheers

 

at a guess by wht u have said, i would say its the CO2 potentiometer

 

Cheers man. Wat does it do?

 

Yeah dude i looked into it there and thats wat it is. If it was adjusted wrong would it cause a glitch reving up?