There is another thing you can do with the EGR Valve and that is cut the rod out that acts on the first valve. This then alows enough space that the internal motor in side the EGR will still activate and move up an down. Then weld the bottom valve closed so that niether one of the valves will open. This then allows you to leave the EGR hooked up but it doesn't really do anything. And you don't have to worry about the coolant boiling over.
Jacob
TS Performance.
Jacob
TS Performance.