[tohi2care]

I have searched and searched and can not find any info on the device. It came attached to a parts truck I bought and I believe it has something to do with the DPF? I figured if anyone would know it would be someone in here.

 

[the man in black]

Just by googling nadp tuner, it would appear that that module is a dpf delete tuner. Likely junk.

 

[El Pozzinator]

Hit these guys up:

North American Diesel Performance - DPF, EGR, UREA Delete Kits - Diesel Performance - Cummins - Powerstroke - Duramax

Looks like maybe a cat test module...