Hello all, new member here. I just bought a 2007 LBZ 4x4 and I'm working out some of the problems with the truck. I tried to get some info on the state of the truck from some diesel shops around Houston even paid $170 diagnostic fee but no real answers. It had a CEL on it and I scanned it and it came up with P0405 (EGR) and P540 (Intake air heater). I have figured out since that this is because it has an intercooler Y-pipe on it. It is the WC Fab pipe kit

I just bought a flashscan V3 to get rid of this CEL

Now I have become interested in tuning it

It came with an unknown tune in it. I know it is not stock because I got a stock LBZ file from the duramax files folder here to compare it against.

My question is on this B1186 table it is unchanged from the stock tune with 885lb-ft (0-750rpm) ; 295 lb-ft (1000-3250rpm) ; 0 lb-ft 3500+rpm

Have I been driving around with torque limited to 295lb-ft all this time I have owned the truck with the CEL light on?