Cm870 gold oil tune

[Chamberpains]

Stop the soot monster. Its killing your engine. Don't think twice about it. Go get yourself the appropriate thick stainless steel blocking plate for the EGR and away you go.
As far as gold oil, you have a cm870 after a demandate and a few oil changes, you'll have much cleaner oil for about 5-6k miles then it'll be black but still cleaner than pre emissions engines. Uni's tune is fantastic.
Gold oil is a bit unachievable for very long with the cm870 because of the slow air actuator. The lag in response makes a small amount of black (more like light grey) smoke when shifting and 1st stepping in to the accelerator.

An oil bypass system will help greatly. But will not get you gold oil from oil change to oil change. More like black but still clean for a big ol Diesel. But then again you don't need ultra clean oil to get way over a million miles out of these engines. They a fantastically built. The parts that slightly sooty oil will effect won't be your enemy. The parts that hammering combustion and just plain wear is. Like your rod and main bearing need to be changed at 900k-1000k miles to and the head will need to be replaced shortly after. Somewhere between 1.1-1.3 million they are just plain whooped. And remember that big 2050 torque tune will speed up the time frame quite a bit on these items.