When you have smoke coming out of your tailpipe, you have too much fuel and not enough oxygen which means you don’t have enough boost. ![]() My DashDaq was telling me I had plenty of fuel oil pressure, I could see my boost going up but I wasn’t feeling any thrust when I pressed the pedal, and I was seeing smoke coming out of the tailpipe. I have noticed early in the morning when I am warming the truck, I get a P006 code which is the MAP (manifold absolute pressure) sensor and EBP correlation is not matching up. I have a DashDaq in my truck and don’t use the tuning I only use it for diagnostics. My truck went from about 18 miles per gallon to about 9. When this sensor starts malfunctioning, there is a tremendous loss of fuel economy. ![]() It can be the sensor or a clogged tube going to the sensor. ![]() The exhaust back pressure (EBP) sensor going bad is a common problem in the 6.4 especially around 90-100K miles.
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