Well here I am at the egr valve. I've tried to find out as much as I could as to why we should disconnect or remove this valve from our 2l-te motors, but the info seems to me anyway a little ify.. So my questions are and sorry if you have covered in the past. -Why remove / disable it? -Dose this valve really help in combustion when active. -What dose it really save use to disconnect it?? (fuel, heat, soot) and is it proven anywhere? -Is there really any need for this valve at all? -If it is out right removed from the truck, will the truck still pass emissions testing, as more stuff will be put out the exhaust system as I see it anyway..?? I'm just tring to understand this before I start playing with it.