c15 black smoke when started cold

all cat injectors have a diff trim for each hole but the ipd injectors have a 1200 trim and a 1200 trim won't go in a cat i didnt know this till after i had them installed so i contacted ipd and they told me to default them to 1100 5232 or 6999 im guessing that maybe there close enough since he told me there are built with better specs than cat injector they do run realy smooth so time will tell