96 f250 downpipe
 

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 ass though!