The first thing should be aftermarket monitoring system like the Edge Insight CS/CTS or the ScangaugeII. Add in a fuel psi gauge and EGT gauge.
Read this link for info.
Things to consider about owning a 6.0L
I don't think the Cortex is capable of turning off the EGR. Either you have a gummed up EGR valve, or the EGR valve is unplugged electrically (not recommended), or you have a delete/welded EGR cooler.
You can look on the pass side of the motor, between the turbo and valve cover, under the intake manifold. There will be either a blue or orange short hose, this hose goes from the oil cooler to the EGR cooler. Follow the hose toward the back of the motor, it connects to a metal tube. If the metal tube does a complete U-turn and heads back toward the front of the motor, then it's a delete. If the metal tube stops at the U-turn, it's got the EGR cooler.
You will see the yellow "X", the first picture is a delete. The second picture is where the tube goes to the EGR cooler.
2004 F350 CC DRW King Ranch
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