I just put a diamond eye 3 in downpipe on my 7.3. Its got a ts 6 position and just a 3 in exhaust straightpiped. And it black smokes like crazy now. Is that normal? It smoke some before but now once i hit 10 psi of boost, it poors black smoke.

 

I have a 6.0 I did straight pipes it did the same thing. It easy up over time. They told me its normal with diesel. The more power the more black smoke. Looks bad *** though!