2007 6.7 Exaust
I had the digital info display show catalist 80% full, then 10 miles later say 90% full, maybe 20 miles later 100% see dealer. I went straight to them as I was on my way hunting and didnt want problems in the mountains. They replaced the catalist at almost $2500. Went 20 miles and the display showed 100% full again. The engine dropped to 12-1500rpm and blue smoke poured from the exhaust, I got off the road as soon as I could. Engine stopped smoking shortly and reved normal. About another 100 miles exactly same senario. I've driven it about 400 miles since w/o issues except the engine light on. Only got about 9mpg on the trip. Any suggestions? Its at the dealer now.