Quote Originally Posted by misterdallas
Can I tighten this nut myself? What tool do I need to use? Or do I need to take it to the mechanic?
You can tighten the nut yourself. It can be a pain in the arse to thread back into the bottom of the EGR vlave mount, but it can be done. Before I had the SC kit installed I think I had re-tightened the nut 3-4 times... after the kit was installed it didn't slip once.