Stock LBZ Smokes excessively

Max Attitude

11SIX
Mar 7, 2012
814
0
16
Caledonia, MI
It's my work truck. 06 with 185k miles now but it has done this for a long time…. It doesn't always smoke but sometimes when I lean into the throttle to pass on the highway it will smoke a stream like a train- grayish black. It's even worse when I floor it. But it doesn't always do it…sometimes I can drive it the same way and have a light haze. The balance rates are good. It runs and starts perfectly fine. The only thing I feel might be off is it feels like my 05 LLY before I did the LBZ turbo inlet… turbo lag bad when WOT. I had a Diablo Predator programmer on it to help mileage but the smoke was even worse then. It's embarrassing to drive and I'd like to get this resolved somehow. No codes.
 

Max Attitude

11SIX
Mar 7, 2012
814
0
16
Caledonia, MI
Cat maybe fills with soot, and thats the smoke you see?

Yeah cat/muffler but it seems to fill quickly after I "clean it out".

Boost leak….maybe. I haven't noticed any noises. I looked that the 90 that's prone to popping and thats still good.

I even PPE modded the air box to see if it would help….nope, lol.

As far as the vane position sensor… I have no idea. I guess I could have my buddy check it with his tech 2 right?