Will an EGR reduce fuel mileage drastically? Is it a common item to change? Is a used one as good as a new OEM from Dodge and worth the money? What would you do? How do I get the bottom bolt out of the EGR valve without moving the alternator? 2005 Grand Caravan sxt, 3.8 dual air. Do I need to adjust anything after replacing this? Is there anything I need to know about this before I attempt it myself? Money is short & I am capable but not versed in this particular item. Any experienced help would be appriciated. Thanks