I went w the 175's w stock nozzles ..I can still run stock fuel system and tune it to whatever I want..u don't have to worry if u have a heavy load to pull and u need to drop back to stock its fine..great injectors so far
I would say check ficm and try starting it with the egr valve unplugged ..I put a new egr valve in mine b4 I deleted it and the egr valve went bad in a few weeks
You really need to smell the white smoke when it does this... if it smells like fuel and it has a blueish tint ...it could be a problem with the egr...even though it was deleted this white smoke could be the truck getting too.much fuel like the egr valve is stuck open .. maybe o ring or...