Re: EGR delete Test
The ill effects of EGR on diesels are well known. While it does reduce NOx and combustion temps, introduction of EGR increases the particulate matter (soot) in the exhaust and decreases the efficiency of the burn on the power stroke adding unburnt fuel. This adds contaminants to the normally clean side of the diesel intake. Manufacturers combat the exhaust side of this with catalytic convertors and diesel particulate filters. EGR is also responsible for soot/fuel contamination in the engine oil. Also, I don't believe it is a coincidence that with the mandate of gas engine emissions systems on diesels, that we are not seeing the mpg's that we expect.
I think for those of you that live in a state with extensive smog inspections, that deleting the EGR is a big risk. Blocking the EGR will reduce the contamination in the intake, but the threat of a coolant leak into the cylinders due to a failed EGR Cooler is still present. Upgrading the system, and sticking to a good preventative maintenance schedule is key here.
The biggest issue with the 6.0 is the inter-related systems and the effect of a failure in any one system. Upgrade the weak OEM EGR Cooler, replace the Oil Cooler with a Ford unit, install a coolant filter, and change your oil regularly.
My thoughts anyway...
2007 Ford 6.0 Diesel RB Wagon UJOR 6"lift-SOLD