EGR Tube!

Very easy fix...if it is just the tubing itself. If you need to replace sections of it, use copper tubing from a hardware store. The EGR Tubing doesn't get nearly as hot as the headers do except for maybe where the tube comes off the header. When I put my long tubes on, i used a hack saw to cut my EGR Tube in half from the header to the valve. Bolted both pieces on where they would normally go and then used some generic orange high temp tubing and a pair of hose clamps to make the two meet. I'm sure this can be used to fix any cracks or busted lines as well. Whatever you do, don't block off the EGR unless you get a chip burnt to take it out of the computers settings. Sometimes is causes crappy drivability and fuel comsumption. hope this helps.