DOC Catalyst Efficiency Numbers

[Lonestar10]

numbers are ok but theres a reason its regening to often there is something intruding into the system like oil from valve stems or from the turbo you need to pull the exhaust off the back of the turbo start it then stick a peice of paper infront of the exhaust stream and see if there is any liquids or anything that gets shot onto the paper then work backwards from there to find out where it is.