I have had my ecodiesel about 8 months. I have a stage 2 SFT tune and full delete. I have seen multiple videos of ecodiesels letting out black smoke with no problem, i’m not sure if it’s my tune that restricts it or if there’s something else I would need to do. I don’t want to blow a bunch out, just a little bit. I have a full delete pipe all the way out the back. The only time it does anything is on a cold start if it’s 30 degrees or less.